Home / 132,928,438.40-199,392,657.60-81,644,163.20

Finding the Fourth Proportional to 132,928,438.40, 199,392,657.60 and 81,644,163.20

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Solution

The fourth proportional to 132,928,438.40, 199,392,657.60 and 81,644,163.20 is: 122,466,244.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,928,438.40 : 199,392,657.60 = 81,644,163.20 : x
  2. Step 2: Convert to fraction form
    132,928,438.40/199,392,657.60 = 81,644,163.20/x
  3. Step 3: Cross multiply
    132,928,438.40x = 199,392,657.60 × 81,644,163.20
  4. Step 4: Simplify right side
    132,928,438.40x = 16,279,246,677,976,120
  5. Step 5: Solve for x
    x = 16,279,246,677,976,120/132,928,438.40
  6. Step 6: Final answer
    x = 122,466,244.80

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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.