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Finding the Fourth Proportional to 124,290, 171,520.56 and 67,701.48

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Solution

The fourth proportional to 124,290, 171,520.56 and 67,701.48 is: 93,428.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,290 : 171,520.56 = 67,701.48 : x
  2. Step 2: Convert to fraction form
    124,290/171,520.56 = 67,701.48/x
  3. Step 3: Cross multiply
    124,290x = 171,520.56 × 67,701.48
  4. Step 4: Simplify right side
    124,290x = 11,612,195,762.43
  5. Step 5: Solve for x
    x = 11,612,195,762.43/124,290
  6. Step 6: Final answer
    x = 93,428.24

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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.