Home / 161,345.28-222,658.72-89,731.68

Finding the Fourth Proportional to 161,345.28, 222,658.72 and 89,731.68

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Solution

The fourth proportional to 161,345.28, 222,658.72 and 89,731.68 is: 123,830.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,345.28 : 222,658.72 = 89,731.68 : x
  2. Step 2: Convert to fraction form
    161,345.28/222,658.72 = 89,731.68/x
  3. Step 3: Cross multiply
    161,345.28x = 222,658.72 × 89,731.68
  4. Step 4: Simplify right side
    161,345.28x = 19,979,541,012.25
  5. Step 5: Solve for x
    x = 19,979,541,012.25/161,345.28
  6. Step 6: Final answer
    x = 123,830.96

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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.