Home / 109,470.40-164,205.60-91,755.70

Finding the Fourth Proportional to 109,470.40, 164,205.60 and 91,755.70

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Solution

The fourth proportional to 109,470.40, 164,205.60 and 91,755.70 is: 137,633.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,470.40 : 164,205.60 = 91,755.70 : x
  2. Step 2: Convert to fraction form
    109,470.40/164,205.60 = 91,755.70/x
  3. Step 3: Cross multiply
    109,470.40x = 164,205.60 × 91,755.70
  4. Step 4: Simplify right side
    109,470.40x = 15,066,799,771.92
  5. Step 5: Solve for x
    x = 15,066,799,771.92/109,470.40
  6. Step 6: Final answer
    x = 137,633.55

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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.