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Finding the Fourth Proportional to 157,601.46, 217,489.54 and 85,980.97

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Solution

The fourth proportional to 157,601.46, 217,489.54 and 85,980.97 is: 118,653.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,601.46 : 217,489.54 = 85,980.97 : x
  2. Step 2: Convert to fraction form
    157,601.46/217,489.54 = 85,980.97/x
  3. Step 3: Cross multiply
    157,601.46x = 217,489.54 × 85,980.97
  4. Step 4: Simplify right side
    157,601.46x = 18,699,961,614.05
  5. Step 5: Solve for x
    x = 18,699,961,614.05/157,601.46
  6. Step 6: Final answer
    x = 118,653.48

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Double scale
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Similar ratio
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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.