Home / 121,156.60-181,562.10-89,318.20

Finding the Fourth Proportional to 121,156.60, 181,562.10 and 89,318.20

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Solution

The fourth proportional to 121,156.60, 181,562.10 and 89,318.20 is: 133,849.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,156.60 : 181,562.10 = 89,318.20 : x
  2. Step 2: Convert to fraction form
    121,156.60/181,562.10 = 89,318.20/x
  3. Step 3: Cross multiply
    121,156.60x = 181,562.10 × 89,318.20
  4. Step 4: Simplify right side
    121,156.60x = 16,216,799,960.22
  5. Step 5: Solve for x
    x = 16,216,799,960.22/121,156.60
  6. Step 6: Final answer
    x = 133,849.91

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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.