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Finding the Fourth Proportional to 185,672.12, 256,230.54 and 100,789.18

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Solution

The fourth proportional to 185,672.12, 256,230.54 and 100,789.18 is: 139,090.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,672.12 : 256,230.54 = 100,789.18 : x
  2. Step 2: Convert to fraction form
    185,672.12/256,230.54 = 100,789.18/x
  3. Step 3: Cross multiply
    185,672.12x = 256,230.54 × 100,789.18
  4. Step 4: Simplify right side
    185,672.12x = 25,825,265,376.98
  5. Step 5: Solve for x
    x = 25,825,265,376.98/185,672.12
  6. Step 6: Final answer
    x = 139,090.71

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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.