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Finding the Fourth Proportional to 121,350.40, 182,025.60 and 68,862.40

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Solution

The fourth proportional to 121,350.40, 182,025.60 and 68,862.40 is: 103,293.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,350.40 : 182,025.60 = 68,862.40 : x
  2. Step 2: Convert to fraction form
    121,350.40/182,025.60 = 68,862.40/x
  3. Step 3: Cross multiply
    121,350.40x = 182,025.60 × 68,862.40
  4. Step 4: Simplify right side
    121,350.40x = 12,534,719,677.44
  5. Step 5: Solve for x
    x = 12,534,719,677.44/121,350.40
  6. Step 6: Final answer
    x = 103,293.60

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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.