Home / 121,288.08-181,691.46-57,158.40

Finding the Fourth Proportional to 121,288.08, 181,691.46 and 57,158.40

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Solution

The fourth proportional to 121,288.08, 181,691.46 and 57,158.40 is: 85,624.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,288.08 : 181,691.46 = 57,158.40 : x
  2. Step 2: Convert to fraction form
    121,288.08/181,691.46 = 57,158.40/x
  3. Step 3: Cross multiply
    121,288.08x = 181,691.46 × 57,158.40
  4. Step 4: Simplify right side
    121,288.08x = 10,385,193,989.37
  5. Step 5: Solve for x
    x = 10,385,193,989.37/121,288.08
  6. Step 6: Final answer
    x = 85,624.19

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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.