Home / 185,605.13-256,135.25-100,722.20

Finding the Fourth Proportional to 185,605.13, 256,135.25 and 100,722.20

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Solution

The fourth proportional to 185,605.13, 256,135.25 and 100,722.20 is: 138,996.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,605.13 : 256,135.25 = 100,722.20 : x
  2. Step 2: Convert to fraction form
    185,605.13/256,135.25 = 100,722.20/x
  3. Step 3: Cross multiply
    185,605.13x = 256,135.25 × 100,722.20
  4. Step 4: Simplify right side
    185,605.13x = 25,798,504,345.07
  5. Step 5: Solve for x
    x = 25,798,504,345.07/185,605.13
  6. Step 6: Final answer
    x = 138,996.72

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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.