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Finding the Fourth Proportional to 124,157, 171,306.78 and 73,171.76

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Solution

The fourth proportional to 124,157, 171,306.78 and 73,171.76 is: 100,959.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,157 : 171,306.78 = 73,171.76 : x
  2. Step 2: Convert to fraction form
    124,157/171,306.78 = 73,171.76/x
  3. Step 3: Cross multiply
    124,157x = 171,306.78 × 73,171.76
  4. Step 4: Simplify right side
    124,157x = 12,534,818,592.53
  5. Step 5: Solve for x
    x = 12,534,818,592.53/124,157
  6. Step 6: Final answer
    x = 100,959.42

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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.