Home / 185,605.15-256,135.10-100,722.21

Finding the Fourth Proportional to 185,605.15, 256,135.10 and 100,722.21

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Solution

The fourth proportional to 185,605.15, 256,135.10 and 100,722.21 is: 138,996.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,605.15 : 256,135.10 = 100,722.21 : x
  2. Step 2: Convert to fraction form
    185,605.15/256,135.10 = 100,722.21/x
  3. Step 3: Cross multiply
    185,605.15x = 256,135.10 × 100,722.21
  4. Step 4: Simplify right side
    185,605.15x = 25,798,493,330.57
  5. Step 5: Solve for x
    x = 25,798,493,330.57/185,605.15
  6. Step 6: Final answer
    x = 138,996.65

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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.