Home / 121,454.20-181,962.60-74,652.40

Finding the Fourth Proportional to 121,454.20, 181,962.60 and 74,652.40

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Solution

The fourth proportional to 121,454.20, 181,962.60 and 74,652.40 is: 111,844.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,454.20 : 181,962.60 = 74,652.40 : x
  2. Step 2: Convert to fraction form
    121,454.20/181,962.60 = 74,652.40/x
  3. Step 3: Cross multiply
    121,454.20x = 181,962.60 × 74,652.40
  4. Step 4: Simplify right side
    121,454.20x = 13,583,944,800.24
  5. Step 5: Solve for x
    x = 13,583,944,800.24/121,454.20
  6. Step 6: Final answer
    x = 111,844.18

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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.