Home / 185,521.49-256,020.30-100,639.16

Finding the Fourth Proportional to 185,521.49, 256,020.30 and 100,639.16

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Solution

The fourth proportional to 185,521.49, 256,020.30 and 100,639.16 is: 138,882.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,521.49 : 256,020.30 = 100,639.16 : x
  2. Step 2: Convert to fraction form
    185,521.49/256,020.30 = 100,639.16/x
  3. Step 3: Cross multiply
    185,521.49x = 256,020.30 × 100,639.16
  4. Step 4: Simplify right side
    185,521.49x = 25,765,667,934.95
  5. Step 5: Solve for x
    x = 25,765,667,934.95/185,521.49
  6. Step 6: Final answer
    x = 138,882.39

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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.