Home / 109,549.26-151,168.74-61,146.78

Finding the Fourth Proportional to 109,549.26, 151,168.74 and 61,146.78

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Solution

The fourth proportional to 109,549.26, 151,168.74 and 61,146.78 is: 84,377.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,549.26 : 151,168.74 = 61,146.78 : x
  2. Step 2: Convert to fraction form
    109,549.26/151,168.74 = 61,146.78/x
  3. Step 3: Cross multiply
    109,549.26x = 151,168.74 × 61,146.78
  4. Step 4: Simplify right side
    109,549.26x = 9,243,481,687.66
  5. Step 5: Solve for x
    x = 9,243,481,687.66/109,549.26
  6. Step 6: Final answer
    x = 84,377.40

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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.