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Finding the Fourth Proportional to 125,425.50, 173,087.31 and 71,711.64

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Solution

The fourth proportional to 125,425.50, 173,087.31 and 71,711.64 is: 98,962.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,425.50 : 173,087.31 = 71,711.64 : x
  2. Step 2: Convert to fraction form
    125,425.50/173,087.31 = 71,711.64/x
  3. Step 3: Cross multiply
    125,425.50x = 173,087.31 × 71,711.64
  4. Step 4: Simplify right side
    125,425.50x = 12,412,374,504.73
  5. Step 5: Solve for x
    x = 12,412,374,504.73/125,425.50
  6. Step 6: Final answer
    x = 98,962.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.