Home / 143,337.18-197,807.67-78,809.14

Finding the Fourth Proportional to 143,337.18, 197,807.67 and 78,809.14

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Solution

The fourth proportional to 143,337.18, 197,807.67 and 78,809.14 is: 108,757.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,337.18 : 197,807.67 = 78,809.14 : x
  2. Step 2: Convert to fraction form
    143,337.18/197,807.67 = 78,809.14/x
  3. Step 3: Cross multiply
    143,337.18x = 197,807.67 × 78,809.14
  4. Step 4: Simplify right side
    143,337.18x = 15,589,052,358.10
  5. Step 5: Solve for x
    x = 15,589,052,358.10/143,337.18
  6. Step 6: Final answer
    x = 108,757.91

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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.