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Finding the Fourth Proportional to 123,374.10, 185,061.15 and 121,405.80

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Solution

The fourth proportional to 123,374.10, 185,061.15 and 121,405.80 is: 182,108.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,374.10 : 185,061.15 = 121,405.80 : x
  2. Step 2: Convert to fraction form
    123,374.10/185,061.15 = 121,405.80/x
  3. Step 3: Cross multiply
    123,374.10x = 185,061.15 × 121,405.80
  4. Step 4: Simplify right side
    123,374.10x = 22,467,496,964.67
  5. Step 5: Solve for x
    x = 22,467,496,964.67/123,374.10
  6. Step 6: Final answer
    x = 182,108.70

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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.