Home / 142,028.28-195,998.89-78,366.08

Finding the Fourth Proportional to 142,028.28, 195,998.89 and 78,366.08

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Solution

The fourth proportional to 142,028.28, 195,998.89 and 78,366.08 is: 108,145.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,028.28 : 195,998.89 = 78,366.08 : x
  2. Step 2: Convert to fraction form
    142,028.28/195,998.89 = 78,366.08/x
  3. Step 3: Cross multiply
    142,028.28x = 195,998.89 × 78,366.08
  4. Step 4: Simplify right side
    142,028.28x = 15,359,664,693.65
  5. Step 5: Solve for x
    x = 15,359,664,693.65/142,028.28
  6. Step 6: Final answer
    x = 108,145.12

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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.