Home / 87,936,031.60-131,904,047.40-79,858,128.40

Finding the Fourth Proportional to 87,936,031.60, 131,904,047.40 and 79,858,128.40

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Solution

The fourth proportional to 87,936,031.60, 131,904,047.40 and 79,858,128.40 is: 119,787,192.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,936,031.60 : 131,904,047.40 = 79,858,128.40 : x
  2. Step 2: Convert to fraction form
    87,936,031.60/131,904,047.40 = 79,858,128.40/x
  3. Step 3: Cross multiply
    87,936,031.60x = 131,904,047.40 × 79,858,128.40
  4. Step 4: Simplify right side
    87,936,031.60x = 10,533,610,353,748,888
  5. Step 5: Solve for x
    x = 10,533,610,353,748,888/87,936,031.60
  6. Step 6: Final answer
    x = 119,787,192.60

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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.