Home / 109,680.12-164,520.21-39,559.43

Finding the Fourth Proportional to 109,680.12, 164,520.21 and 39,559.43

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Solution

The fourth proportional to 109,680.12, 164,520.21 and 39,559.43 is: 59,339.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,680.12 : 164,520.21 = 39,559.43 : x
  2. Step 2: Convert to fraction form
    109,680.12/164,520.21 = 39,559.43/x
  3. Step 3: Cross multiply
    109,680.12x = 164,520.21 × 39,559.43
  4. Step 4: Simplify right side
    109,680.12x = 6,508,325,731.08
  5. Step 5: Solve for x
    x = 6,508,325,731.08/109,680.12
  6. Step 6: Final answer
    x = 59,339.16

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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.