Home / 143,346.98-197,806.68-78,812.76

Finding the Fourth Proportional to 143,346.98, 197,806.68 and 78,812.76

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Solution

The fourth proportional to 143,346.98, 197,806.68 and 78,812.76 is: 108,754.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,346.98 : 197,806.68 = 78,812.76 : x
  2. Step 2: Convert to fraction form
    143,346.98/197,806.68 = 78,812.76/x
  3. Step 3: Cross multiply
    143,346.98x = 197,806.68 × 78,812.76
  4. Step 4: Simplify right side
    143,346.98x = 15,589,690,397.24
  5. Step 5: Solve for x
    x = 15,589,690,397.24/143,346.98
  6. Step 6: Final answer
    x = 108,754.93

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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.