Home / 109,310.55-163,965.84-84,386.97

Finding the Fourth Proportional to 109,310.55, 163,965.84 and 84,386.97

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Solution

The fourth proportional to 109,310.55, 163,965.84 and 84,386.97 is: 126,580.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,310.55 : 163,965.84 = 84,386.97 : x
  2. Step 2: Convert to fraction form
    109,310.55/163,965.84 = 84,386.97/x
  3. Step 3: Cross multiply
    109,310.55x = 163,965.84 × 84,386.97
  4. Step 4: Simplify right side
    109,310.55x = 13,836,580,421.10
  5. Step 5: Solve for x
    x = 13,836,580,421.10/109,310.55
  6. Step 6: Final answer
    x = 126,580.47

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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.