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Finding the Fourth Proportional to 127,071.74, 175,393.41 and 79,296.86

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Solution

The fourth proportional to 127,071.74, 175,393.41 and 79,296.86 is: 109,451.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,071.74 : 175,393.41 = 79,296.86 : x
  2. Step 2: Convert to fraction form
    127,071.74/175,393.41 = 79,296.86/x
  3. Step 3: Cross multiply
    127,071.74x = 175,393.41 × 79,296.86
  4. Step 4: Simplify right side
    127,071.74x = 13,908,146,677.69
  5. Step 5: Solve for x
    x = 13,908,146,677.69/127,071.74
  6. Step 6: Final answer
    x = 109,451.14

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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.