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Finding the Fourth Proportional to 157,690.10, 217,640.57 and 94,032

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Solution

The fourth proportional to 157,690.10, 217,640.57 and 94,032 is: 129,780.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,690.10 : 217,640.57 = 94,032 : x
  2. Step 2: Convert to fraction form
    157,690.10/217,640.57 = 94,032/x
  3. Step 3: Cross multiply
    157,690.10x = 217,640.57 × 94,032
  4. Step 4: Simplify right side
    157,690.10x = 20,465,177,608.08
  5. Step 5: Solve for x
    x = 20,465,177,608.08/157,690.10
  6. Step 6: Final answer
    x = 129,780.99

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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.