Home / 87,169.42-130,641.73-42,180.21

Finding the Fourth Proportional to 87,169.42, 130,641.73 and 42,180.21

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Solution

The fourth proportional to 87,169.42, 130,641.73 and 42,180.21 is: 63,215.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,169.42 : 130,641.73 = 42,180.21 : x
  2. Step 2: Convert to fraction form
    87,169.42/130,641.73 = 42,180.21/x
  3. Step 3: Cross multiply
    87,169.42x = 130,641.73 × 42,180.21
  4. Step 4: Simplify right side
    87,169.42x = 5,510,494,742.05
  5. Step 5: Solve for x
    x = 5,510,494,742.05/87,169.42
  6. Step 6: Final answer
    x = 63,215.92

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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.