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Finding the Fourth Proportional to 127,352.40, 175,747.16 and 79,633.68

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Solution

The fourth proportional to 127,352.40, 175,747.16 and 79,633.68 is: 109,895.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,352.40 : 175,747.16 = 79,633.68 : x
  2. Step 2: Convert to fraction form
    127,352.40/175,747.16 = 79,633.68/x
  3. Step 3: Cross multiply
    127,352.40x = 175,747.16 × 79,633.68
  4. Step 4: Simplify right side
    127,352.40x = 13,995,393,100.35
  5. Step 5: Solve for x
    x = 13,995,393,100.35/127,352.40
  6. Step 6: Final answer
    x = 109,895.01

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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.