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Finding the Fourth Proportional to 223,691.10, 308,693.70 and 123,089.10

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Solution

The fourth proportional to 223,691.10, 308,693.70 and 123,089.10 is: 169,862.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,691.10 : 308,693.70 = 123,089.10 : x
  2. Step 2: Convert to fraction form
    223,691.10/308,693.70 = 123,089.10/x
  3. Step 3: Cross multiply
    223,691.10x = 308,693.70 × 123,089.10
  4. Step 4: Simplify right side
    223,691.10x = 37,996,829,708.67
  5. Step 5: Solve for x
    x = 37,996,829,708.67/223,691.10
  6. Step 6: Final answer
    x = 169,862.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.