Home / 144,070.40-198,815.36-79,540.16

Finding the Fourth Proportional to 144,070.40, 198,815.36 and 79,540.16

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Solution

The fourth proportional to 144,070.40, 198,815.36 and 79,540.16 is: 109,764.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,070.40 : 198,815.36 = 79,540.16 : x
  2. Step 2: Convert to fraction form
    144,070.40/198,815.36 = 79,540.16/x
  3. Step 3: Cross multiply
    144,070.40x = 198,815.36 × 79,540.16
  4. Step 4: Simplify right side
    144,070.40x = 15,813,805,544.86
  5. Step 5: Solve for x
    x = 15,813,805,544.86/144,070.40
  6. Step 6: Final answer
    x = 109,764.43

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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.