Home / 121,489.20-181,650.60-89,996.40

Finding the Fourth Proportional to 121,489.20, 181,650.60 and 89,996.40

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Solution

The fourth proportional to 121,489.20, 181,650.60 and 89,996.40 is: 134,562.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,489.20 : 181,650.60 = 89,996.40 : x
  2. Step 2: Convert to fraction form
    121,489.20/181,650.60 = 89,996.40/x
  3. Step 3: Cross multiply
    121,489.20x = 181,650.60 × 89,996.40
  4. Step 4: Simplify right side
    121,489.20x = 16,347,900,057.84
  5. Step 5: Solve for x
    x = 16,347,900,057.84/121,489.20
  6. Step 6: Final answer
    x = 134,562.58

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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.