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Finding the Fourth Proportional to 155,882.52, 215,104.86 and 87,916.20

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Solution

The fourth proportional to 155,882.52, 215,104.86 and 87,916.20 is: 121,317.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,882.52 : 215,104.86 = 87,916.20 : x
  2. Step 2: Convert to fraction form
    155,882.52/215,104.86 = 87,916.20/x
  3. Step 3: Cross multiply
    155,882.52x = 215,104.86 × 87,916.20
  4. Step 4: Simplify right side
    155,882.52x = 18,911,201,892.73
  5. Step 5: Solve for x
    x = 18,911,201,892.73/155,882.52
  6. Step 6: Final answer
    x = 121,317.01

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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.