Home / 129,688.43-194,550.84-45,429.30

Finding the Fourth Proportional to 129,688.43, 194,550.84 and 45,429.30

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Solution

The fourth proportional to 129,688.43, 194,550.84 and 45,429.30 is: 68,150.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,688.43 : 194,550.84 = 45,429.30 : x
  2. Step 2: Convert to fraction form
    129,688.43/194,550.84 = 45,429.30/x
  3. Step 3: Cross multiply
    129,688.43x = 194,550.84 × 45,429.30
  4. Step 4: Simplify right side
    129,688.43x = 8,838,308,475.61
  5. Step 5: Solve for x
    x = 8,838,308,475.61/129,688.43
  6. Step 6: Final answer
    x = 68,150.32

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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.