Home / 118,439.80-177,789.30-74,116.60

Finding the Fourth Proportional to 118,439.80, 177,789.30 and 74,116.60

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Solution

The fourth proportional to 118,439.80, 177,789.30 and 74,116.60 is: 111,256.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,439.80 : 177,789.30 = 74,116.60 : x
  2. Step 2: Convert to fraction form
    118,439.80/177,789.30 = 74,116.60/x
  3. Step 3: Cross multiply
    118,439.80x = 177,789.30 × 74,116.60
  4. Step 4: Simplify right side
    118,439.80x = 13,177,138,432.38
  5. Step 5: Solve for x
    x = 13,177,138,432.38/118,439.80
  6. Step 6: Final answer
    x = 111,256.00

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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.