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Finding the Fourth Proportional to 120,869.56, 181,435.56 and 89,180.20

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Solution

The fourth proportional to 120,869.56, 181,435.56 and 89,180.20 is: 133,867.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,869.56 : 181,435.56 = 89,180.20 : x
  2. Step 2: Convert to fraction form
    120,869.56/181,435.56 = 89,180.20/x
  3. Step 3: Cross multiply
    120,869.56x = 181,435.56 × 89,180.20
  4. Step 4: Simplify right side
    120,869.56x = 16,180,459,527.91
  5. Step 5: Solve for x
    x = 16,180,459,527.91/120,869.56
  6. Step 6: Final answer
    x = 133,867.12

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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.