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Finding the Fourth Proportional to 109,473.80, 164,210.70 and 91,759.10

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Solution

The fourth proportional to 109,473.80, 164,210.70 and 91,759.10 is: 137,638.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,473.80 : 164,210.70 = 91,759.10 : x
  2. Step 2: Convert to fraction form
    109,473.80/164,210.70 = 91,759.10/x
  3. Step 3: Cross multiply
    109,473.80x = 164,210.70 × 91,759.10
  4. Step 4: Simplify right side
    109,473.80x = 15,067,826,042.37
  5. Step 5: Solve for x
    x = 15,067,826,042.37/109,473.80
  6. Step 6: Final answer
    x = 137,638.65

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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.