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Finding the Fourth Proportional to 157,725.50, 217,658.25 and 89,740.98

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Solution

The fourth proportional to 157,725.50, 217,658.25 and 89,740.98 is: 123,840.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,725.50 : 217,658.25 = 89,740.98 : x
  2. Step 2: Convert to fraction form
    157,725.50/217,658.25 = 89,740.98/x
  3. Step 3: Cross multiply
    157,725.50x = 217,658.25 × 89,740.98
  4. Step 4: Simplify right side
    157,725.50x = 19,532,864,660.09
  5. Step 5: Solve for x
    x = 19,532,864,660.09/157,725.50
  6. Step 6: Final answer
    x = 123,840.88

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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.