Home / 143,959.41-198,662.60-79,429.17

Finding the Fourth Proportional to 143,959.41, 198,662.60 and 79,429.17

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Solution

The fourth proportional to 143,959.41, 198,662.60 and 79,429.17 is: 109,611.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,959.41 : 198,662.60 = 79,429.17 : x
  2. Step 2: Convert to fraction form
    143,959.41/198,662.60 = 79,429.17/x
  3. Step 3: Cross multiply
    143,959.41x = 198,662.60 × 79,429.17
  4. Step 4: Simplify right side
    143,959.41x = 15,779,605,030.90
  5. Step 5: Solve for x
    x = 15,779,605,030.90/143,959.41
  6. Step 6: Final answer
    x = 109,611.49

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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.