Home / 143,005.44-197,359.76-78,487.14

Finding the Fourth Proportional to 143,005.44, 197,359.76 and 78,487.14

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Solution

The fourth proportional to 143,005.44, 197,359.76 and 78,487.14 is: 108,318.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,005.44 : 197,359.76 = 78,487.14 : x
  2. Step 2: Convert to fraction form
    143,005.44/197,359.76 = 78,487.14/x
  3. Step 3: Cross multiply
    143,005.44x = 197,359.76 × 78,487.14
  4. Step 4: Simplify right side
    143,005.44x = 15,490,203,113.49
  5. Step 5: Solve for x
    x = 15,490,203,113.49/143,005.44
  6. Step 6: Final answer
    x = 108,318.98

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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.