Home / 127,189.38-175,485.78-79,491.18

Finding the Fourth Proportional to 127,189.38, 175,485.78 and 79,491.18

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Solution

The fourth proportional to 127,189.38, 175,485.78 and 79,491.18 is: 109,675.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,189.38 : 175,485.78 = 79,491.18 : x
  2. Step 2: Convert to fraction form
    127,189.38/175,485.78 = 79,491.18/x
  3. Step 3: Cross multiply
    127,189.38x = 175,485.78 × 79,491.18
  4. Step 4: Simplify right side
    127,189.38x = 13,949,571,725.42
  5. Step 5: Solve for x
    x = 13,949,571,725.42/127,189.38
  6. Step 6: Final answer
    x = 109,675.60

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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.