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Finding the Fourth Proportional to 118,515.60, 177,485.40 and 62,989.20

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Solution

The fourth proportional to 118,515.60, 177,485.40 and 62,989.20 is: 94,330.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,515.60 : 177,485.40 = 62,989.20 : x
  2. Step 2: Convert to fraction form
    118,515.60/177,485.40 = 62,989.20/x
  3. Step 3: Cross multiply
    118,515.60x = 177,485.40 × 62,989.20
  4. Step 4: Simplify right side
    118,515.60x = 11,179,663,357.68
  5. Step 5: Solve for x
    x = 11,179,663,357.68/118,515.60
  6. Step 6: Final answer
    x = 94,330.73

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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.