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Finding the Fourth Proportional to 118,358.40, 177,537.60 and 39,475.20

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Solution

The fourth proportional to 118,358.40, 177,537.60 and 39,475.20 is: 59,212.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,358.40 : 177,537.60 = 39,475.20 : x
  2. Step 2: Convert to fraction form
    118,358.40/177,537.60 = 39,475.20/x
  3. Step 3: Cross multiply
    118,358.40x = 177,537.60 × 39,475.20
  4. Step 4: Simplify right side
    118,358.40x = 7,008,332,267.52
  5. Step 5: Solve for x
    x = 7,008,332,267.52/118,358.40
  6. Step 6: Final answer
    x = 59,212.80

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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.