Home / 128,934.40-193,401.60-126,966.10

Finding the Fourth Proportional to 128,934.40, 193,401.60 and 126,966.10

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Solution

The fourth proportional to 128,934.40, 193,401.60 and 126,966.10 is: 190,449.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,934.40 : 193,401.60 = 126,966.10 : x
  2. Step 2: Convert to fraction form
    128,934.40/193,401.60 = 126,966.10/x
  3. Step 3: Cross multiply
    128,934.40x = 193,401.60 × 126,966.10
  4. Step 4: Simplify right side
    128,934.40x = 24,555,446,885.76
  5. Step 5: Solve for x
    x = 24,555,446,885.76/128,934.40
  6. Step 6: Final answer
    x = 190,449.15

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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.