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Finding the Fourth Proportional to 118,683.50, 177,979.11 and 42,761.79

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Solution

The fourth proportional to 118,683.50, 177,979.11 and 42,761.79 is: 64,126.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,683.50 : 177,979.11 = 42,761.79 : x
  2. Step 2: Convert to fraction form
    118,683.50/177,979.11 = 42,761.79/x
  3. Step 3: Cross multiply
    118,683.50x = 177,979.11 × 42,761.79
  4. Step 4: Simplify right side
    118,683.50x = 7,610,705,165.85
  5. Step 5: Solve for x
    x = 7,610,705,165.85/118,683.50
  6. Step 6: Final answer
    x = 64,126.06

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1.5x scale

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.