Home / 143,288.12-197,736.18-79,624.58

Finding the Fourth Proportional to 143,288.12, 197,736.18 and 79,624.58

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Solution

The fourth proportional to 143,288.12, 197,736.18 and 79,624.58 is: 109,881.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,288.12 : 197,736.18 = 79,624.58 : x
  2. Step 2: Convert to fraction form
    143,288.12/197,736.18 = 79,624.58/x
  3. Step 3: Cross multiply
    143,288.12x = 197,736.18 × 79,624.58
  4. Step 4: Simplify right side
    143,288.12x = 15,744,660,283.30
  5. Step 5: Solve for x
    x = 15,744,660,283.30/143,288.12
  6. Step 6: Final answer
    x = 109,881.13

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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.