Home / 143,868.95-198,534.58-79,340.91

Finding the Fourth Proportional to 143,868.95, 198,534.58 and 79,340.91

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Solution

The fourth proportional to 143,868.95, 198,534.58 and 79,340.91 is: 109,487.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,868.95 : 198,534.58 = 79,340.91 : x
  2. Step 2: Convert to fraction form
    143,868.95/198,534.58 = 79,340.91/x
  3. Step 3: Cross multiply
    143,868.95x = 198,534.58 × 79,340.91
  4. Step 4: Simplify right side
    143,868.95x = 15,751,914,243.67
  5. Step 5: Solve for x
    x = 15,751,914,243.67/143,868.95
  6. Step 6: Final answer
    x = 109,487.93

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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.