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Finding the Fourth Proportional to 124,080, 171,228.16 and 67,490.56

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Solution

The fourth proportional to 124,080, 171,228.16 and 67,490.56 is: 93,135.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,080 : 171,228.16 = 67,490.56 : x
  2. Step 2: Convert to fraction form
    124,080/171,228.16 = 67,490.56/x
  3. Step 3: Cross multiply
    124,080x = 171,228.16 × 67,490.56
  4. Step 4: Simplify right side
    124,080x = 11,556,284,406.17
  5. Step 5: Solve for x
    x = 11,556,284,406.17/124,080
  6. Step 6: Final answer
    x = 93,135.75

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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.