Home / 109,708.10-164,432.55-81,973.70

Finding the Fourth Proportional to 109,708.10, 164,432.55 and 81,973.70

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Solution

The fourth proportional to 109,708.10, 164,432.55 and 81,973.70 is: 122,863.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,708.10 : 164,432.55 = 81,973.70 : x
  2. Step 2: Convert to fraction form
    109,708.10/164,432.55 = 81,973.70/x
  3. Step 3: Cross multiply
    109,708.10x = 164,432.55 × 81,973.70
  4. Step 4: Simplify right side
    109,708.10x = 13,479,144,523.94
  5. Step 5: Solve for x
    x = 13,479,144,523.94/109,708.10
  6. Step 6: Final answer
    x = 122,863.71

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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.