Home / 121,189.08-181,793.34-42,301.56

Finding the Fourth Proportional to 121,189.08, 181,793.34 and 42,301.56

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Solution

The fourth proportional to 121,189.08, 181,793.34 and 42,301.56 is: 63,455.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,189.08 : 181,793.34 = 42,301.56 : x
  2. Step 2: Convert to fraction form
    121,189.08/181,793.34 = 42,301.56/x
  3. Step 3: Cross multiply
    121,189.08x = 181,793.34 × 42,301.56
  4. Step 4: Simplify right side
    121,189.08x = 7,690,141,879.61
  5. Step 5: Solve for x
    x = 7,690,141,879.61/121,189.08
  6. Step 6: Final answer
    x = 63,455.73

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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.