Home / 128,031.20-192,046.80-117,922.40

Finding the Fourth Proportional to 128,031.20, 192,046.80 and 117,922.40

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Solution

The fourth proportional to 128,031.20, 192,046.80 and 117,922.40 is: 176,883.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,031.20 : 192,046.80 = 117,922.40 : x
  2. Step 2: Convert to fraction form
    128,031.20/192,046.80 = 117,922.40/x
  3. Step 3: Cross multiply
    128,031.20x = 192,046.80 × 117,922.40
  4. Step 4: Simplify right side
    128,031.20x = 22,646,619,568.32
  5. Step 5: Solve for x
    x = 22,646,619,568.32/128,031.20
  6. Step 6: Final answer
    x = 176,883.60

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1.5x scale

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.