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Finding the Fourth Proportional to 230,729, 318,406.02 and 124,745

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Solution

The fourth proportional to 230,729, 318,406.02 and 124,745 is: 172,148.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,729 : 318,406.02 = 124,745 : x
  2. Step 2: Convert to fraction form
    230,729/318,406.02 = 124,745/x
  3. Step 3: Cross multiply
    230,729x = 318,406.02 × 124,745
  4. Step 4: Simplify right side
    230,729x = 39,719,558,964.90
  5. Step 5: Solve for x
    x = 39,719,558,964.90/230,729
  6. Step 6: Final answer
    x = 172,148.10

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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.