Home / 143,376.96-197,863.45-78,842.14

Finding the Fourth Proportional to 143,376.96, 197,863.45 and 78,842.14

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Solution

The fourth proportional to 143,376.96, 197,863.45 and 78,842.14 is: 108,803.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,376.96 : 197,863.45 = 78,842.14 : x
  2. Step 2: Convert to fraction form
    143,376.96/197,863.45 = 78,842.14/x
  3. Step 3: Cross multiply
    143,376.96x = 197,863.45 × 78,842.14
  4. Step 4: Simplify right side
    143,376.96x = 15,599,977,134.02
  5. Step 5: Solve for x
    x = 15,599,977,134.02/143,376.96
  6. Step 6: Final answer
    x = 108,803.93

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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.