Home / 127,308.13-175,612.15-79,478.44

Finding the Fourth Proportional to 127,308.13, 175,612.15 and 79,478.44

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Solution

The fourth proportional to 127,308.13, 175,612.15 and 79,478.44 is: 109,634.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,308.13 : 175,612.15 = 79,478.44 : x
  2. Step 2: Convert to fraction form
    127,308.13/175,612.15 = 79,478.44/x
  3. Step 3: Cross multiply
    127,308.13x = 175,612.15 × 79,478.44
  4. Step 4: Simplify right side
    127,308.13x = 13,957,379,727.05
  5. Step 5: Solve for x
    x = 13,957,379,727.05/127,308.13
  6. Step 6: Final answer
    x = 109,634.63

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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.