Home / 99,469,809.12-137,215,796.40-68,476,170.72

Finding the Fourth Proportional to 99,469,809.12, 137,215,796.40 and 68,476,170.72

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Solution

The fourth proportional to 99,469,809.12, 137,215,796.40 and 68,476,170.72 is: 94,460,946.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,469,809.12 : 137,215,796.40 = 68,476,170.72 : x
  2. Step 2: Convert to fraction form
    99,469,809.12/137,215,796.40 = 68,476,170.72/x
  3. Step 3: Cross multiply
    99,469,809.12x = 137,215,796.40 × 68,476,170.72
  4. Step 4: Simplify right side
    99,469,809.12x = 9,396,012,299,767,162
  5. Step 5: Solve for x
    x = 9,396,012,299,767,162/99,469,809.12
  6. Step 6: Final answer
    x = 94,460,946.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.