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Finding the Fourth Proportional to 139,773.60, 209,660.40 and 124,610.40

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Solution

The fourth proportional to 139,773.60, 209,660.40 and 124,610.40 is: 186,915.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,773.60 : 209,660.40 = 124,610.40 : x
  2. Step 2: Convert to fraction form
    139,773.60/209,660.40 = 124,610.40/x
  3. Step 3: Cross multiply
    139,773.60x = 209,660.40 × 124,610.40
  4. Step 4: Simplify right side
    139,773.60x = 26,125,866,308.16
  5. Step 5: Solve for x
    x = 26,125,866,308.16/139,773.60
  6. Step 6: Final answer
    x = 186,915.60

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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.