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Finding the Fourth Proportional to 118,342.01, 177,601.17 and 86,833.49

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Solution

The fourth proportional to 118,342.01, 177,601.17 and 86,833.49 is: 130,314.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,342.01 : 177,601.17 = 86,833.49 : x
  2. Step 2: Convert to fraction form
    118,342.01/177,601.17 = 86,833.49/x
  3. Step 3: Cross multiply
    118,342.01x = 177,601.17 × 86,833.49
  4. Step 4: Simplify right side
    118,342.01x = 15,421,728,531.18
  5. Step 5: Solve for x
    x = 15,421,728,531.18/118,342.01
  6. Step 6: Final answer
    x = 130,314.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.