Home / 87,342,638.80-131,013,958.20-67,187,246.80

Finding the Fourth Proportional to 87,342,638.80, 131,013,958.20 and 67,187,246.80

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Solution

The fourth proportional to 87,342,638.80, 131,013,958.20 and 67,187,246.80 is: 100,780,870.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,342,638.80 : 131,013,958.20 = 67,187,246.80 : x
  2. Step 2: Convert to fraction form
    87,342,638.80/131,013,958.20 = 67,187,246.80/x
  3. Step 3: Cross multiply
    87,342,638.80x = 131,013,958.20 × 67,187,246.80
  4. Step 4: Simplify right side
    87,342,638.80x = 8,802,467,143,828,284
  5. Step 5: Solve for x
    x = 8,802,467,143,828,284/87,342,638.80
  6. Step 6: Final answer
    x = 100,780,870.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.