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Finding the Fourth Proportional to 118,425.60, 177,595.20 and 39,542.40

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Solution

The fourth proportional to 118,425.60, 177,595.20 and 39,542.40 is: 59,299.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,425.60 : 177,595.20 = 39,542.40 : x
  2. Step 2: Convert to fraction form
    118,425.60/177,595.20 = 39,542.40/x
  3. Step 3: Cross multiply
    118,425.60x = 177,595.20 × 39,542.40
  4. Step 4: Simplify right side
    118,425.60x = 7,022,540,436.48
  5. Step 5: Solve for x
    x = 7,022,540,436.48/118,425.60
  6. Step 6: Final answer
    x = 59,299.18

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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.