Home / 144,012.21-198,772.43-87,470.97

Finding the Fourth Proportional to 144,012.21, 198,772.43 and 87,470.97

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Solution

The fourth proportional to 144,012.21, 198,772.43 and 87,470.97 is: 120,731.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,012.21 : 198,772.43 = 87,470.97 : x
  2. Step 2: Convert to fraction form
    144,012.21/198,772.43 = 87,470.97/x
  3. Step 3: Cross multiply
    144,012.21x = 198,772.43 × 87,470.97
  4. Step 4: Simplify right side
    144,012.21x = 17,386,816,824.00
  5. Step 5: Solve for x
    x = 17,386,816,824.00/144,012.21
  6. Step 6: Final answer
    x = 120,731.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.