Home / 142,808.86-197,031.19-82,371.40

Finding the Fourth Proportional to 142,808.86, 197,031.19 and 82,371.40

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Solution

The fourth proportional to 142,808.86, 197,031.19 and 82,371.40 is: 113,646.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,808.86 : 197,031.19 = 82,371.40 : x
  2. Step 2: Convert to fraction form
    142,808.86/197,031.19 = 82,371.40/x
  3. Step 3: Cross multiply
    142,808.86x = 197,031.19 × 82,371.40
  4. Step 4: Simplify right side
    142,808.86x = 16,229,734,963.97
  5. Step 5: Solve for x
    x = 16,229,734,963.97/142,808.86
  6. Step 6: Final answer
    x = 113,646.56

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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.