Home / 142,020.52-195,994.25-78,362.44

Finding the Fourth Proportional to 142,020.52, 195,994.25 and 78,362.44

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Solution

The fourth proportional to 142,020.52, 195,994.25 and 78,362.44 is: 108,143.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,020.52 : 195,994.25 = 78,362.44 : x
  2. Step 2: Convert to fraction form
    142,020.52/195,994.25 = 78,362.44/x
  3. Step 3: Cross multiply
    142,020.52x = 195,994.25 × 78,362.44
  4. Step 4: Simplify right side
    142,020.52x = 15,358,587,655.97
  5. Step 5: Solve for x
    x = 15,358,587,655.97/142,020.52
  6. Step 6: Final answer
    x = 108,143.44

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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.