Home / 185,240.12-255,631.75-100,357.18

Finding the Fourth Proportional to 185,240.12, 255,631.75 and 100,357.18

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Solution

The fourth proportional to 185,240.12, 255,631.75 and 100,357.18 is: 138,493.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,240.12 : 255,631.75 = 100,357.18 : x
  2. Step 2: Convert to fraction form
    185,240.12/255,631.75 = 100,357.18/x
  3. Step 3: Cross multiply
    185,240.12x = 255,631.75 × 100,357.18
  4. Step 4: Simplify right side
    185,240.12x = 25,654,480,658.49
  5. Step 5: Solve for x
    x = 25,654,480,658.49/185,240.12
  6. Step 6: Final answer
    x = 138,493.12

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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.