Home / 156,399.36-215,842.56-89,329.92

Finding the Fourth Proportional to 156,399.36, 215,842.56 and 89,329.92

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Solution

The fourth proportional to 156,399.36, 215,842.56 and 89,329.92 is: 123,281.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,399.36 : 215,842.56 = 89,329.92 : x
  2. Step 2: Convert to fraction form
    156,399.36/215,842.56 = 89,329.92/x
  3. Step 3: Cross multiply
    156,399.36x = 215,842.56 × 89,329.92
  4. Step 4: Simplify right side
    156,399.36x = 19,281,198,617.40
  5. Step 5: Solve for x
    x = 19,281,198,617.40/156,399.36
  6. Step 6: Final answer
    x = 123,281.83

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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.