Home / 143,539.12-198,082.56-79,875.82

Finding the Fourth Proportional to 143,539.12, 198,082.56 and 79,875.82

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Solution

The fourth proportional to 143,539.12, 198,082.56 and 79,875.82 is: 110,227.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,539.12 : 198,082.56 = 79,875.82 : x
  2. Step 2: Convert to fraction form
    143,539.12/198,082.56 = 79,875.82/x
  3. Step 3: Cross multiply
    143,539.12x = 198,082.56 × 79,875.82
  4. Step 4: Simplify right side
    143,539.12x = 15,822,006,907.70
  5. Step 5: Solve for x
    x = 15,822,006,907.70/143,539.12
  6. Step 6: Final answer
    x = 110,227.84

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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.