Home / 143,393.10-197,884.74-78,865.14

Finding the Fourth Proportional to 143,393.10, 197,884.74 and 78,865.14

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Solution

The fourth proportional to 143,393.10, 197,884.74 and 78,865.14 is: 108,835.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,393.10 : 197,884.74 = 78,865.14 : x
  2. Step 2: Convert to fraction form
    143,393.10/197,884.74 = 78,865.14/x
  3. Step 3: Cross multiply
    143,393.10x = 197,884.74 × 78,865.14
  4. Step 4: Simplify right side
    143,393.10x = 15,606,207,723.96
  5. Step 5: Solve for x
    x = 15,606,207,723.96/143,393.10
  6. Step 6: Final answer
    x = 108,835.14

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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.