Home / 143,410.23-197,895.29-79,742.61

Finding the Fourth Proportional to 143,410.23, 197,895.29 and 79,742.61

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Solution

The fourth proportional to 143,410.23, 197,895.29 and 79,742.61 is: 110,038.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,410.23 : 197,895.29 = 79,742.61 : x
  2. Step 2: Convert to fraction form
    143,410.23/197,895.29 = 79,742.61/x
  3. Step 3: Cross multiply
    143,410.23x = 197,895.29 × 79,742.61
  4. Step 4: Simplify right side
    143,410.23x = 15,780,686,532.59
  5. Step 5: Solve for x
    x = 15,780,686,532.59/143,410.23
  6. Step 6: Final answer
    x = 110,038.78

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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.