Home / 121,187.61-181,864.45-42,301.83

Finding the Fourth Proportional to 121,187.61, 181,864.45 and 42,301.83

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Solution

The fourth proportional to 121,187.61, 181,864.45 and 42,301.83 is: 63,481.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,187.61 : 181,864.45 = 42,301.83 : x
  2. Step 2: Convert to fraction form
    121,187.61/181,864.45 = 42,301.83/x
  3. Step 3: Cross multiply
    121,187.61x = 181,864.45 × 42,301.83
  4. Step 4: Simplify right side
    121,187.61x = 7,693,199,046.94
  5. Step 5: Solve for x
    x = 7,693,199,046.94/121,187.61
  6. Step 6: Final answer
    x = 63,481.73

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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.