Home / 142,074.24-196,060.68-78,410.64

Finding the Fourth Proportional to 142,074.24, 196,060.68 and 78,410.64

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Solution

The fourth proportional to 142,074.24, 196,060.68 and 78,410.64 is: 108,205.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,074.24 : 196,060.68 = 78,410.64 : x
  2. Step 2: Convert to fraction form
    142,074.24/196,060.68 = 78,410.64/x
  3. Step 3: Cross multiply
    142,074.24x = 196,060.68 × 78,410.64
  4. Step 4: Simplify right side
    142,074.24x = 15,373,243,397.64
  5. Step 5: Solve for x
    x = 15,373,243,397.64/142,074.24
  6. Step 6: Final answer
    x = 108,205.71

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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.