Home / 155,951.48-215,213.12-84,331.55

Finding the Fourth Proportional to 155,951.48, 215,213.12 and 84,331.55

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Solution

The fourth proportional to 155,951.48, 215,213.12 and 84,331.55 is: 116,377.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,951.48 : 215,213.12 = 84,331.55 : x
  2. Step 2: Convert to fraction form
    155,951.48/215,213.12 = 84,331.55/x
  3. Step 3: Cross multiply
    155,951.48x = 215,213.12 × 84,331.55
  4. Step 4: Simplify right side
    155,951.48x = 18,149,255,568.28
  5. Step 5: Solve for x
    x = 18,149,255,568.28/155,951.48
  6. Step 6: Final answer
    x = 116,377.58

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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.