Home / 126,154.29-189,310.21-51,274.40

Finding the Fourth Proportional to 126,154.29, 189,310.21 and 51,274.40

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Solution

The fourth proportional to 126,154.29, 189,310.21 and 51,274.40 is: 76,943.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,154.29 : 189,310.21 = 51,274.40 : x
  2. Step 2: Convert to fraction form
    126,154.29/189,310.21 = 51,274.40/x
  3. Step 3: Cross multiply
    126,154.29x = 189,310.21 × 51,274.40
  4. Step 4: Simplify right side
    126,154.29x = 9,706,768,508.83
  5. Step 5: Solve for x
    x = 9,706,768,508.83/126,154.29
  6. Step 6: Final answer
    x = 76,943.63

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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.