Home / 156,399.23-215,691.58-121,952.50

Finding the Fourth Proportional to 156,399.23, 215,691.58 and 121,952.50

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Solution

The fourth proportional to 156,399.23, 215,691.58 and 121,952.50 is: 168,185.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,399.23 : 215,691.58 = 121,952.50 : x
  2. Step 2: Convert to fraction form
    156,399.23/215,691.58 = 121,952.50/x
  3. Step 3: Cross multiply
    156,399.23x = 215,691.58 × 121,952.50
  4. Step 4: Simplify right side
    156,399.23x = 26,304,127,409.95
  5. Step 5: Solve for x
    x = 26,304,127,409.95/156,399.23
  6. Step 6: Final answer
    x = 168,185.79

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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.