Home / 145,227.20-200,380.78-87,865.10

Finding the Fourth Proportional to 145,227.20, 200,380.78 and 87,865.10

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Solution

The fourth proportional to 145,227.20, 200,380.78 and 87,865.10 is: 121,234.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,227.20 : 200,380.78 = 87,865.10 : x
  2. Step 2: Convert to fraction form
    145,227.20/200,380.78 = 87,865.10/x
  3. Step 3: Cross multiply
    145,227.20x = 200,380.78 × 87,865.10
  4. Step 4: Simplify right side
    145,227.20x = 17,606,477,272.78
  5. Step 5: Solve for x
    x = 17,606,477,272.78/145,227.20
  6. Step 6: Final answer
    x = 121,234.02

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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.