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Finding the Fourth Proportional to 123,657.20, 185,874.60 and 121,324.40

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Solution

The fourth proportional to 123,657.20, 185,874.60 and 121,324.40 is: 182,368.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,657.20 : 185,874.60 = 121,324.40 : x
  2. Step 2: Convert to fraction form
    123,657.20/185,874.60 = 121,324.40/x
  3. Step 3: Cross multiply
    123,657.20x = 185,874.60 × 121,324.40
  4. Step 4: Simplify right side
    123,657.20x = 22,551,124,320.24
  5. Step 5: Solve for x
    x = 22,551,124,320.24/123,657.20
  6. Step 6: Final answer
    x = 182,368.07

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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.