Home / 142,114.68-196,113.10-78,451.11

Finding the Fourth Proportional to 142,114.68, 196,113.10 and 78,451.11

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Solution

The fourth proportional to 142,114.68, 196,113.10 and 78,451.11 is: 108,259.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,114.68 : 196,113.10 = 78,451.11 : x
  2. Step 2: Convert to fraction form
    142,114.68/196,113.10 = 78,451.11/x
  3. Step 3: Cross multiply
    142,114.68x = 196,113.10 × 78,451.11
  4. Step 4: Simplify right side
    142,114.68x = 15,385,290,380.54
  5. Step 5: Solve for x
    x = 15,385,290,380.54/142,114.68
  6. Step 6: Final answer
    x = 108,259.68

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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.