Home / 142,019.68-195,998.16-78,363.04

Finding the Fourth Proportional to 142,019.68, 195,998.16 and 78,363.04

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Solution

The fourth proportional to 142,019.68, 195,998.16 and 78,363.04 is: 108,147.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,019.68 : 195,998.16 = 78,363.04 : x
  2. Step 2: Convert to fraction form
    142,019.68/195,998.16 = 78,363.04/x
  3. Step 3: Cross multiply
    142,019.68x = 195,998.16 × 78,363.04
  4. Step 4: Simplify right side
    142,019.68x = 15,359,011,652.01
  5. Step 5: Solve for x
    x = 15,359,011,652.01/142,019.68
  6. Step 6: Final answer
    x = 108,147.07

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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.