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Finding the Fourth Proportional to 124,146, 171,321.48 and 67,557.78

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Solution

The fourth proportional to 124,146, 171,321.48 and 67,557.78 is: 93,229.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,146 : 171,321.48 = 67,557.78 : x
  2. Step 2: Convert to fraction form
    124,146/171,321.48 = 67,557.78/x
  3. Step 3: Cross multiply
    124,146x = 171,321.48 × 67,557.78
  4. Step 4: Simplify right side
    124,146x = 11,574,098,855.11
  5. Step 5: Solve for x
    x = 11,574,098,855.11/124,146
  6. Step 6: Final answer
    x = 93,229.74

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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.