Home / 142,024.97-195,994.30-78,362.76

Finding the Fourth Proportional to 142,024.97, 195,994.30 and 78,362.76

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Solution

The fourth proportional to 142,024.97, 195,994.30 and 78,362.76 is: 108,140.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,024.97 : 195,994.30 = 78,362.76 : x
  2. Step 2: Convert to fraction form
    142,024.97/195,994.30 = 78,362.76/x
  3. Step 3: Cross multiply
    142,024.97x = 195,994.30 × 78,362.76
  4. Step 4: Simplify right side
    142,024.97x = 15,358,654,292.27
  5. Step 5: Solve for x
    x = 15,358,654,292.27/142,024.97
  6. Step 6: Final answer
    x = 108,140.52

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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.