Home / 126,043.20-189,137.70-47,165.40

Finding the Fourth Proportional to 126,043.20, 189,137.70 and 47,165.40

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Solution

The fourth proportional to 126,043.20, 189,137.70 and 47,165.40 is: 70,775.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,043.20 : 189,137.70 = 47,165.40 : x
  2. Step 2: Convert to fraction form
    126,043.20/189,137.70 = 47,165.40/x
  3. Step 3: Cross multiply
    126,043.20x = 189,137.70 × 47,165.40
  4. Step 4: Simplify right side
    126,043.20x = 8,920,755,275.58
  5. Step 5: Solve for x
    x = 8,920,755,275.58/126,043.20
  6. Step 6: Final answer
    x = 70,775.38

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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.