Home / 143,170.28-197,575.14-79,508.20

Finding the Fourth Proportional to 143,170.28, 197,575.14 and 79,508.20

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Solution

The fourth proportional to 143,170.28, 197,575.14 and 79,508.20 is: 109,721.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,170.28 : 197,575.14 = 79,508.20 : x
  2. Step 2: Convert to fraction form
    143,170.28/197,575.14 = 79,508.20/x
  3. Step 3: Cross multiply
    143,170.28x = 197,575.14 × 79,508.20
  4. Step 4: Simplify right side
    143,170.28x = 15,708,843,746.15
  5. Step 5: Solve for x
    x = 15,708,843,746.15/143,170.28
  6. Step 6: Final answer
    x = 109,721.40

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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.