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Finding the Fourth Proportional to 173,418.28, 239,246.40 and 137,464

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Solution

The fourth proportional to 173,418.28, 239,246.40 and 137,464 is: 189,644.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,418.28 : 239,246.40 = 137,464 : x
  2. Step 2: Convert to fraction form
    173,418.28/239,246.40 = 137,464/x
  3. Step 3: Cross multiply
    173,418.28x = 239,246.40 × 137,464
  4. Step 4: Simplify right side
    173,418.28x = 32,887,767,129.60
  5. Step 5: Solve for x
    x = 32,887,767,129.60/173,418.28
  6. Step 6: Final answer
    x = 189,644.18

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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.