Home / 221,912,405.57-306,164,950.92-129,073,205.81

Finding the Fourth Proportional to 221,912,405.57, 306,164,950.92 and 129,073,205.81

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Solution

The fourth proportional to 221,912,405.57, 306,164,950.92 and 129,073,205.81 is: 178,077,884.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,912,405.57 : 306,164,950.92 = 129,073,205.81 : x
  2. Step 2: Convert to fraction form
    221,912,405.57/306,164,950.92 = 129,073,205.81/x
  3. Step 3: Cross multiply
    221,912,405.57x = 306,164,950.92 × 129,073,205.81
  4. Step 4: Simplify right side
    221,912,405.57x = 39,517,691,720,374,888
  5. Step 5: Solve for x
    x = 39,517,691,720,374,888/221,912,405.57
  6. Step 6: Final answer
    x = 178,077,884.47

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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.