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Finding the Fourth Proportional to 127,359.85, 175,702.08 and 79,530.16

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Solution

The fourth proportional to 127,359.85, 175,702.08 and 79,530.16 is: 109,717.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,359.85 : 175,702.08 = 79,530.16 : x
  2. Step 2: Convert to fraction form
    127,359.85/175,702.08 = 79,530.16/x
  3. Step 3: Cross multiply
    127,359.85x = 175,702.08 × 79,530.16
  4. Step 4: Simplify right side
    127,359.85x = 13,973,614,534.73
  5. Step 5: Solve for x
    x = 13,973,614,534.73/127,359.85
  6. Step 6: Final answer
    x = 109,717.58

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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.