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Finding the Fourth Proportional to 127,025.80, 175,629.78 and 111,279.40

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Solution

The fourth proportional to 127,025.80, 175,629.78 and 111,279.40 is: 153,858.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,025.80 : 175,629.78 = 111,279.40 : x
  2. Step 2: Convert to fraction form
    127,025.80/175,629.78 = 111,279.40/x
  3. Step 3: Cross multiply
    127,025.80x = 175,629.78 × 111,279.40
  4. Step 4: Simplify right side
    127,025.80x = 19,543,976,540.53
  5. Step 5: Solve for x
    x = 19,543,976,540.53/127,025.80
  6. Step 6: Final answer
    x = 153,858.32

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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.