Home / 138,478,503.60-207,549,793.80-61,720,052.40

Finding the Fourth Proportional to 138,478,503.60, 207,549,793.80 and 61,720,052.40

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Solution

The fourth proportional to 138,478,503.60, 207,549,793.80 and 61,720,052.40 is: 92,505,217.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,478,503.60 : 207,549,793.80 = 61,720,052.40 : x
  2. Step 2: Convert to fraction form
    138,478,503.60/207,549,793.80 = 61,720,052.40/x
  3. Step 3: Cross multiply
    138,478,503.60x = 207,549,793.80 × 61,720,052.40
  4. Step 4: Simplify right side
    138,478,503.60x = 12,809,984,148,945,196
  5. Step 5: Solve for x
    x = 12,809,984,148,945,196/138,478,503.60
  6. Step 6: Final answer
    x = 92,505,217.89

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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.