Home / 128,834.26-177,791.52-71,471.85

Finding the Fourth Proportional to 128,834.26, 177,791.52 and 71,471.85

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Solution

The fourth proportional to 128,834.26, 177,791.52 and 71,471.85 is: 98,631.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,834.26 : 177,791.52 = 71,471.85 : x
  2. Step 2: Convert to fraction form
    128,834.26/177,791.52 = 71,471.85/x
  3. Step 3: Cross multiply
    128,834.26x = 177,791.52 × 71,471.85
  4. Step 4: Simplify right side
    128,834.26x = 12,707,088,848.71
  5. Step 5: Solve for x
    x = 12,707,088,848.71/128,834.26
  6. Step 6: Final answer
    x = 98,631.29

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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.