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Finding the Fourth Proportional to 125,398.40, 173,049.82 and 71,684.60

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Solution

The fourth proportional to 125,398.40, 173,049.82 and 71,684.60 is: 98,924.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,398.40 : 173,049.82 = 71,684.60 : x
  2. Step 2: Convert to fraction form
    125,398.40/173,049.82 = 71,684.60/x
  3. Step 3: Cross multiply
    125,398.40x = 173,049.82 × 71,684.60
  4. Step 4: Simplify right side
    125,398.40x = 12,405,007,126.77
  5. Step 5: Solve for x
    x = 12,405,007,126.77/125,398.40
  6. Step 6: Final answer
    x = 98,924.76

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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.