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Finding the Fourth Proportional to 109,080, 150,573.27 and 68,785.74

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Solution

The fourth proportional to 109,080, 150,573.27 and 68,785.74 is: 94,951.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,080 : 150,573.27 = 68,785.74 : x
  2. Step 2: Convert to fraction form
    109,080/150,573.27 = 68,785.74/x
  3. Step 3: Cross multiply
    109,080x = 150,573.27 × 68,785.74
  4. Step 4: Simplify right side
    109,080x = 10,357,293,801.17
  5. Step 5: Solve for x
    x = 10,357,293,801.17/109,080
  6. Step 6: Final answer
    x = 94,951.35

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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.