Home / 156,288.64-215,693.76-89,230.72

Finding the Fourth Proportional to 156,288.64, 215,693.76 and 89,230.72

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Solution

The fourth proportional to 156,288.64, 215,693.76 and 89,230.72 is: 123,147.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,288.64 : 215,693.76 = 89,230.72 : x
  2. Step 2: Convert to fraction form
    156,288.64/215,693.76 = 89,230.72/x
  3. Step 3: Cross multiply
    156,288.64x = 215,693.76 × 89,230.72
  4. Step 4: Simplify right side
    156,288.64x = 19,246,509,504.31
  5. Step 5: Solve for x
    x = 19,246,509,504.31/156,288.64
  6. Step 6: Final answer
    x = 123,147.21

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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.