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Finding the Fourth Proportional to 121,437.70, 182,156.55 and 38,331.70

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Solution

The fourth proportional to 121,437.70, 182,156.55 and 38,331.70 is: 57,497.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,437.70 : 182,156.55 = 38,331.70 : x
  2. Step 2: Convert to fraction form
    121,437.70/182,156.55 = 38,331.70/x
  3. Step 3: Cross multiply
    121,437.70x = 182,156.55 × 38,331.70
  4. Step 4: Simplify right side
    121,437.70x = 6,982,370,227.64
  5. Step 5: Solve for x
    x = 6,982,370,227.64/121,437.70
  6. Step 6: Final answer
    x = 57,497.55

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1.5x scale

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.