Home / 98,151.62-135,442.19-55,128.87

Finding the Fourth Proportional to 98,151.62, 135,442.19 and 55,128.87

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Solution

The fourth proportional to 98,151.62, 135,442.19 and 55,128.87 is: 76,073.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,151.62 : 135,442.19 = 55,128.87 : x
  2. Step 2: Convert to fraction form
    98,151.62/135,442.19 = 55,128.87/x
  3. Step 3: Cross multiply
    98,151.62x = 135,442.19 × 55,128.87
  4. Step 4: Simplify right side
    98,151.62x = 7,466,775,022.85
  5. Step 5: Solve for x
    x = 7,466,775,022.85/98,151.62
  6. Step 6: Final answer
    x = 76,073.89

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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.