Home / 142,809.18-197,031.62-82,371.72

Finding the Fourth Proportional to 142,809.18, 197,031.62 and 82,371.72

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Solution

The fourth proportional to 142,809.18, 197,031.62 and 82,371.72 is: 113,646.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,809.18 : 197,031.62 = 82,371.72 : x
  2. Step 2: Convert to fraction form
    142,809.18/197,031.62 = 82,371.72/x
  3. Step 3: Cross multiply
    142,809.18x = 197,031.62 × 82,371.72
  4. Step 4: Simplify right side
    142,809.18x = 16,229,833,021.93
  5. Step 5: Solve for x
    x = 16,229,833,021.93/142,809.18
  6. Step 6: Final answer
    x = 113,646.99

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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.