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Finding the Fourth Proportional to 157,562.88, 217,439.72 and 85,945.47

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Solution

The fourth proportional to 157,562.88, 217,439.72 and 85,945.47 is: 118,606.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,562.88 : 217,439.72 = 85,945.47 : x
  2. Step 2: Convert to fraction form
    157,562.88/217,439.72 = 85,945.47/x
  3. Step 3: Cross multiply
    157,562.88x = 217,439.72 × 85,945.47
  4. Step 4: Simplify right side
    157,562.88x = 18,687,958,502.34
  5. Step 5: Solve for x
    x = 18,687,958,502.34/157,562.88
  6. Step 6: Final answer
    x = 118,606.35

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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.