Home / 142,960.85-197,286.17-79,298.64

Finding the Fourth Proportional to 142,960.85, 197,286.17 and 79,298.64

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Solution

The fourth proportional to 142,960.85, 197,286.17 and 79,298.64 is: 109,432.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,960.85 : 197,286.17 = 79,298.64 : x
  2. Step 2: Convert to fraction form
    142,960.85/197,286.17 = 79,298.64/x
  3. Step 3: Cross multiply
    142,960.85x = 197,286.17 × 79,298.64
  4. Step 4: Simplify right side
    142,960.85x = 15,644,524,971.81
  5. Step 5: Solve for x
    x = 15,644,524,971.81/142,960.85
  6. Step 6: Final answer
    x = 109,432.23

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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.