Home / 142,904.45-197,205.22-79,240.88

Finding the Fourth Proportional to 142,904.45, 197,205.22 and 79,240.88

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Solution

The fourth proportional to 142,904.45, 197,205.22 and 79,240.88 is: 109,350.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,904.45 : 197,205.22 = 79,240.88 : x
  2. Step 2: Convert to fraction form
    142,904.45/197,205.22 = 79,240.88/x
  3. Step 3: Cross multiply
    142,904.45x = 197,205.22 × 79,240.88
  4. Step 4: Simplify right side
    142,904.45x = 15,626,715,173.39
  5. Step 5: Solve for x
    x = 15,626,715,173.39/142,904.45
  6. Step 6: Final answer
    x = 109,350.79

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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.