Home / 87,207,504.60-130,811,256.90-79,129,601.40

Finding the Fourth Proportional to 87,207,504.60, 130,811,256.90 and 79,129,601.40

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Solution

The fourth proportional to 87,207,504.60, 130,811,256.90 and 79,129,601.40 is: 118,694,402.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,207,504.60 : 130,811,256.90 = 79,129,601.40 : x
  2. Step 2: Convert to fraction form
    87,207,504.60/130,811,256.90 = 79,129,601.40/x
  3. Step 3: Cross multiply
    87,207,504.60x = 130,811,256.90 × 79,129,601.40
  4. Step 4: Simplify right side
    87,207,504.60x = 10,351,042,617,130,000
  5. Step 5: Solve for x
    x = 10,351,042,617,130,000/87,207,504.60
  6. Step 6: Final answer
    x = 118,694,402.10

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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.