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Finding the Fourth Proportional to 118,086.60, 177,129.90 and 102,534.60

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Solution

The fourth proportional to 118,086.60, 177,129.90 and 102,534.60 is: 153,801.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,086.60 : 177,129.90 = 102,534.60 : x
  2. Step 2: Convert to fraction form
    118,086.60/177,129.90 = 102,534.60/x
  3. Step 3: Cross multiply
    118,086.60x = 177,129.90 × 102,534.60
  4. Step 4: Simplify right side
    118,086.60x = 18,161,943,444.54
  5. Step 5: Solve for x
    x = 18,161,943,444.54/118,086.60
  6. Step 6: Final answer
    x = 153,801.90

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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.