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Finding the Fourth Proportional to 127,161.96, 175,475.34 and 79,412.46

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Solution

The fourth proportional to 127,161.96, 175,475.34 and 79,412.46 is: 109,584.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,161.96 : 175,475.34 = 79,412.46 : x
  2. Step 2: Convert to fraction form
    127,161.96/175,475.34 = 79,412.46/x
  3. Step 3: Cross multiply
    127,161.96x = 175,475.34 × 79,412.46
  4. Step 4: Simplify right side
    127,161.96x = 13,934,928,418.74
  5. Step 5: Solve for x
    x = 13,934,928,418.74/127,161.96
  6. Step 6: Final answer
    x = 109,584.10

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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.