Home / 144,072.90-198,818.81-79,542.66

Finding the Fourth Proportional to 144,072.90, 198,818.81 and 79,542.66

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Solution

The fourth proportional to 144,072.90, 198,818.81 and 79,542.66 is: 109,767.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,072.90 : 198,818.81 = 79,542.66 : x
  2. Step 2: Convert to fraction form
    144,072.90/198,818.81 = 79,542.66/x
  3. Step 3: Cross multiply
    144,072.90x = 198,818.81 × 79,542.66
  4. Step 4: Simplify right side
    144,072.90x = 15,814,577,005.43
  5. Step 5: Solve for x
    x = 15,814,577,005.43/144,072.90
  6. Step 6: Final answer
    x = 109,767.88

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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.