Home / 142,028.16-195,998.84-78,366.08

Finding the Fourth Proportional to 142,028.16, 195,998.84 and 78,366.08

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Solution

The fourth proportional to 142,028.16, 195,998.84 and 78,366.08 is: 108,145.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,028.16 : 195,998.84 = 78,366.08 : x
  2. Step 2: Convert to fraction form
    142,028.16/195,998.84 = 78,366.08/x
  3. Step 3: Cross multiply
    142,028.16x = 195,998.84 × 78,366.08
  4. Step 4: Simplify right side
    142,028.16x = 15,359,660,775.35
  5. Step 5: Solve for x
    x = 15,359,660,775.35/142,028.16
  6. Step 6: Final answer
    x = 108,145.18

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1.5x scale

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.