Home / 151,542.38-209,020.34-128,723.06

Finding the Fourth Proportional to 151,542.38, 209,020.34 and 128,723.06

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Solution

The fourth proportional to 151,542.38, 209,020.34 and 128,723.06 is: 177,545.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,542.38 : 209,020.34 = 128,723.06 : x
  2. Step 2: Convert to fraction form
    151,542.38/209,020.34 = 128,723.06/x
  3. Step 3: Cross multiply
    151,542.38x = 209,020.34 × 128,723.06
  4. Step 4: Simplify right side
    151,542.38x = 26,905,736,078.32
  5. Step 5: Solve for x
    x = 26,905,736,078.32/151,542.38
  6. Step 6: Final answer
    x = 177,545.96

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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.