Home / 185,140.28-255,493.68-100,257.40

Finding the Fourth Proportional to 185,140.28, 255,493.68 and 100,257.40

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Solution

The fourth proportional to 185,140.28, 255,493.68 and 100,257.40 is: 138,355.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,140.28 : 255,493.68 = 100,257.40 : x
  2. Step 2: Convert to fraction form
    185,140.28/255,493.68 = 100,257.40/x
  3. Step 3: Cross multiply
    185,140.28x = 255,493.68 × 100,257.40
  4. Step 4: Simplify right side
    185,140.28x = 25,615,132,073.23
  5. Step 5: Solve for x
    x = 25,615,132,073.23/185,140.28
  6. Step 6: Final answer
    x = 138,355.26

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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.