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Finding the Fourth Proportional to 121,398.61, 182,119.45 and 37,156.91

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Solution

The fourth proportional to 121,398.61, 182,119.45 and 37,156.91 is: 55,741.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,398.61 : 182,119.45 = 37,156.91 : x
  2. Step 2: Convert to fraction form
    121,398.61/182,119.45 = 37,156.91/x
  3. Step 3: Cross multiply
    121,398.61x = 182,119.45 × 37,156.91
  4. Step 4: Simplify right side
    121,398.61x = 6,766,996,012.90
  5. Step 5: Solve for x
    x = 6,766,996,012.90/121,398.61
  6. Step 6: Final answer
    x = 55,741.96

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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.