Home / 121,046.40-181,545.60-42,165.12

Finding the Fourth Proportional to 121,046.40, 181,545.60 and 42,165.12

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Solution

The fourth proportional to 121,046.40, 181,545.60 and 42,165.12 is: 63,239.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,046.40 : 181,545.60 = 42,165.12 : x
  2. Step 2: Convert to fraction form
    121,046.40/181,545.60 = 42,165.12/x
  3. Step 3: Cross multiply
    121,046.40x = 181,545.60 × 42,165.12
  4. Step 4: Simplify right side
    121,046.40x = 7,654,892,009.47
  5. Step 5: Solve for x
    x = 7,654,892,009.47/121,046.40
  6. Step 6: Final answer
    x = 63,239.32

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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.