Home / 121,181.47-181,855.25-42,295.69

Finding the Fourth Proportional to 121,181.47, 181,855.25 and 42,295.69

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Solution

The fourth proportional to 121,181.47, 181,855.25 and 42,295.69 is: 63,472.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,181.47 : 181,855.25 = 42,295.69 : x
  2. Step 2: Convert to fraction form
    121,181.47/181,855.25 = 42,295.69/x
  3. Step 3: Cross multiply
    121,181.47x = 181,855.25 × 42,295.69
  4. Step 4: Simplify right side
    121,181.47x = 7,691,693,278.87
  5. Step 5: Solve for x
    x = 7,691,693,278.87/121,181.47
  6. Step 6: Final answer
    x = 63,472.52

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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.