Home / 138,712,503.20-208,005,769.20-52,422,231.20

Finding the Fourth Proportional to 138,712,503.20, 208,005,769.20 and 52,422,231.20

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Solution

The fourth proportional to 138,712,503.20, 208,005,769.20 and 52,422,231.20 is: 78,609,543.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,712,503.20 : 208,005,769.20 = 52,422,231.20 : x
  2. Step 2: Convert to fraction form
    138,712,503.20/208,005,769.20 = 52,422,231.20/x
  3. Step 3: Cross multiply
    138,712,503.20x = 208,005,769.20 × 52,422,231.20
  4. Step 4: Simplify right side
    138,712,503.20x = 10,904,126,523,936,240
  5. Step 5: Solve for x
    x = 10,904,126,523,936,240/138,712,503.20
  6. Step 6: Final answer
    x = 78,609,543.28

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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.