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Finding the Fourth Proportional to 121,348.20, 181,989.90 and 37,108.20

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Solution

The fourth proportional to 121,348.20, 181,989.90 and 37,108.20 is: 55,652.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,348.20 : 181,989.90 = 37,108.20 : x
  2. Step 2: Convert to fraction form
    121,348.20/181,989.90 = 37,108.20/x
  3. Step 3: Cross multiply
    121,348.20x = 181,989.90 × 37,108.20
  4. Step 4: Simplify right side
    121,348.20x = 6,753,317,607.18
  5. Step 5: Solve for x
    x = 6,753,317,607.18/121,348.20
  6. Step 6: Final answer
    x = 55,652.39

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1.5x scale

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.