Home / 129,689.43-194,552.34-45,430.30

Finding the Fourth Proportional to 129,689.43, 194,552.34 and 45,430.30

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Solution

The fourth proportional to 129,689.43, 194,552.34 and 45,430.30 is: 68,151.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,689.43 : 194,552.34 = 45,430.30 : x
  2. Step 2: Convert to fraction form
    129,689.43/194,552.34 = 45,430.30/x
  3. Step 3: Cross multiply
    129,689.43x = 194,552.34 × 45,430.30
  4. Step 4: Simplify right side
    129,689.43x = 8,838,571,171.90
  5. Step 5: Solve for x
    x = 8,838,571,171.90/129,689.43
  6. Step 6: Final answer
    x = 68,151.82

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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.