Home / 155,957.70-215,279.96-121,434.18

Finding the Fourth Proportional to 155,957.70, 215,279.96 and 121,434.18

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Solution

The fourth proportional to 155,957.70, 215,279.96 and 121,434.18 is: 167,624.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,957.70 : 215,279.96 = 121,434.18 : x
  2. Step 2: Convert to fraction form
    155,957.70/215,279.96 = 121,434.18/x
  3. Step 3: Cross multiply
    155,957.70x = 215,279.96 × 121,434.18
  4. Step 4: Simplify right side
    155,957.70x = 26,142,344,805.86
  5. Step 5: Solve for x
    x = 26,142,344,805.86/155,957.70
  6. Step 6: Final answer
    x = 167,624.59

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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.