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Finding the Fourth Proportional to 155,471.90, 233,207.85 and 85,794.08

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Solution

The fourth proportional to 155,471.90, 233,207.85 and 85,794.08 is: 128,691.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,471.90 : 233,207.85 = 85,794.08 : x
  2. Step 2: Convert to fraction form
    155,471.90/233,207.85 = 85,794.08/x
  3. Step 3: Cross multiply
    155,471.90x = 233,207.85 × 85,794.08
  4. Step 4: Simplify right side
    155,471.90x = 20,007,852,939.53
  5. Step 5: Solve for x
    x = 20,007,852,939.53/155,471.90
  6. Step 6: Final answer
    x = 128,691.12

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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.