Home / 87,501.40-131,381.70-67,802.20

Finding the Fourth Proportional to 87,501.40, 131,381.70 and 67,802.20

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Solution

The fourth proportional to 87,501.40, 131,381.70 and 67,802.20 is: 101,803.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,501.40 : 131,381.70 = 67,802.20 : x
  2. Step 2: Convert to fraction form
    87,501.40/131,381.70 = 67,802.20/x
  3. Step 3: Cross multiply
    87,501.40x = 131,381.70 × 67,802.20
  4. Step 4: Simplify right side
    87,501.40x = 8,907,968,299.74
  5. Step 5: Solve for x
    x = 8,907,968,299.74/87,501.40
  6. Step 6: Final answer
    x = 101,803.72

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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.