Home / 127,108.38-175,336.65-79,278.69

Finding the Fourth Proportional to 127,108.38, 175,336.65 and 79,278.69

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Solution

The fourth proportional to 127,108.38, 175,336.65 and 79,278.69 is: 109,359.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,108.38 : 175,336.65 = 79,278.69 : x
  2. Step 2: Convert to fraction form
    127,108.38/175,336.65 = 79,278.69/x
  3. Step 3: Cross multiply
    127,108.38x = 175,336.65 × 79,278.69
  4. Step 4: Simplify right side
    127,108.38x = 13,900,459,920.99
  5. Step 5: Solve for x
    x = 13,900,459,920.99/127,108.38
  6. Step 6: Final answer
    x = 109,359.11

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1.5x scale

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.