Home / 72,171,010.80-108,256,516.20-67,069,177.20

Finding the Fourth Proportional to 72,171,010.80, 108,256,516.20 and 67,069,177.20

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Solution

The fourth proportional to 72,171,010.80, 108,256,516.20 and 67,069,177.20 is: 100,603,765.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,171,010.80 : 108,256,516.20 = 67,069,177.20 : x
  2. Step 2: Convert to fraction form
    72,171,010.80/108,256,516.20 = 67,069,177.20/x
  3. Step 3: Cross multiply
    72,171,010.80x = 108,256,516.20 × 67,069,177.20
  4. Step 4: Simplify right side
    72,171,010.80x = 7,260,675,468,072,471
  5. Step 5: Solve for x
    x = 7,260,675,468,072,471/72,171,010.80
  6. Step 6: Final answer
    x = 100,603,765.80

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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.