Home / 82,110.45-123,165.68-19,780.95

Finding the Fourth Proportional to 82,110.45, 123,165.68 and 19,780.95

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Solution

The fourth proportional to 82,110.45, 123,165.68 and 19,780.95 is: 29,671.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,110.45 : 123,165.68 = 19,780.95 : x
  2. Step 2: Convert to fraction form
    82,110.45/123,165.68 = 19,780.95/x
  3. Step 3: Cross multiply
    82,110.45x = 123,165.68 × 19,780.95
  4. Step 4: Simplify right side
    82,110.45x = 2,436,334,058.89
  5. Step 5: Solve for x
    x = 2,436,334,058.89/82,110.45
  6. Step 6: Final answer
    x = 29,671.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.