Home / 143,002.92-197,347.68-78,474.96

Finding the Fourth Proportional to 143,002.92, 197,347.68 and 78,474.96

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Solution

The fourth proportional to 143,002.92, 197,347.68 and 78,474.96 is: 108,297.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,002.92 : 197,347.68 = 78,474.96 : x
  2. Step 2: Convert to fraction form
    143,002.92/197,347.68 = 78,474.96/x
  3. Step 3: Cross multiply
    143,002.92x = 197,347.68 × 78,474.96
  4. Step 4: Simplify right side
    143,002.92x = 15,486,851,294.09
  5. Step 5: Solve for x
    x = 15,486,851,294.09/143,002.92
  6. Step 6: Final answer
    x = 108,297.45

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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.