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Finding the Fourth Proportional to 230,965, 318,732.66 and 124,981

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Solution

The fourth proportional to 230,965, 318,732.66 and 124,981 is: 172,474.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,965 : 318,732.66 = 124,981 : x
  2. Step 2: Convert to fraction form
    230,965/318,732.66 = 124,981/x
  3. Step 3: Cross multiply
    230,965x = 318,732.66 × 124,981
  4. Step 4: Simplify right side
    230,965x = 39,835,526,579.46
  5. Step 5: Solve for x
    x = 39,835,526,579.46/230,965
  6. Step 6: Final answer
    x = 172,474.30

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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.