Home / 142,080.55-196,057.20-78,414.24

Finding the Fourth Proportional to 142,080.55, 196,057.20 and 78,414.24

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Solution

The fourth proportional to 142,080.55, 196,057.20 and 78,414.24 is: 108,203.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,080.55 : 196,057.20 = 78,414.24 : x
  2. Step 2: Convert to fraction form
    142,080.55/196,057.20 = 78,414.24/x
  3. Step 3: Cross multiply
    142,080.55x = 196,057.20 × 78,414.24
  4. Step 4: Simplify right side
    142,080.55x = 15,373,675,354.24
  5. Step 5: Solve for x
    x = 15,373,675,354.24/142,080.55
  6. Step 6: Final answer
    x = 108,203.94

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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.