Home / 87,169.92-130,642.47-42,180.70

Finding the Fourth Proportional to 87,169.92, 130,642.47 and 42,180.70

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Solution

The fourth proportional to 87,169.92, 130,642.47 and 42,180.70 is: 63,216.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,169.92 : 130,642.47 = 42,180.70 : x
  2. Step 2: Convert to fraction form
    87,169.92/130,642.47 = 42,180.70/x
  3. Step 3: Cross multiply
    87,169.92x = 130,642.47 × 42,180.70
  4. Step 4: Simplify right side
    87,169.92x = 5,510,590,834.33
  5. Step 5: Solve for x
    x = 5,510,590,834.33/87,169.92
  6. Step 6: Final answer
    x = 63,216.66

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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.