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Finding the Fourth Proportional to 155,879.10, 215,113.15 and 113,473.17

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Solution

The fourth proportional to 155,879.10, 215,113.15 and 113,473.17 is: 156,592.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,879.10 : 215,113.15 = 113,473.17 : x
  2. Step 2: Convert to fraction form
    155,879.10/215,113.15 = 113,473.17/x
  3. Step 3: Cross multiply
    155,879.10x = 215,113.15 × 113,473.17
  4. Step 4: Simplify right side
    155,879.10x = 24,409,569,963.62
  5. Step 5: Solve for x
    x = 24,409,569,963.62/155,879.10
  6. Step 6: Final answer
    x = 156,592.97

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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.