Home / 179,043.20-268,240.80-85,342.40

Finding the Fourth Proportional to 179,043.20, 268,240.80 and 85,342.40

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Solution

The fourth proportional to 179,043.20, 268,240.80 and 85,342.40 is: 127,859.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,043.20 : 268,240.80 = 85,342.40 : x
  2. Step 2: Convert to fraction form
    179,043.20/268,240.80 = 85,342.40/x
  3. Step 3: Cross multiply
    179,043.20x = 268,240.80 × 85,342.40
  4. Step 4: Simplify right side
    179,043.20x = 22,892,313,649.92
  5. Step 5: Solve for x
    x = 22,892,313,649.92/179,043.20
  6. Step 6: Final answer
    x = 127,859.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.