Home / 143,003.18-197,343.85-78,473.49

Finding the Fourth Proportional to 143,003.18, 197,343.85 and 78,473.49

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Solution

The fourth proportional to 143,003.18, 197,343.85 and 78,473.49 is: 108,293.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,003.18 : 197,343.85 = 78,473.49 : x
  2. Step 2: Convert to fraction form
    143,003.18/197,343.85 = 78,473.49/x
  3. Step 3: Cross multiply
    143,003.18x = 197,343.85 × 78,473.49
  4. Step 4: Simplify right side
    143,003.18x = 15,486,260,599.41
  5. Step 5: Solve for x
    x = 15,486,260,599.41/143,003.18
  6. Step 6: Final answer
    x = 108,293.12

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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.