Home / 100,051,938.72-137,962,033.38-65,179,961.28

Finding the Fourth Proportional to 100,051,938.72, 137,962,033.38 and 65,179,961.28

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Solution

The fourth proportional to 100,051,938.72, 137,962,033.38 and 65,179,961.28 is: 89,876,919.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,051,938.72 : 137,962,033.38 = 65,179,961.28 : x
  2. Step 2: Convert to fraction form
    100,051,938.72/137,962,033.38 = 65,179,961.28/x
  3. Step 3: Cross multiply
    100,051,938.72x = 137,962,033.38 × 65,179,961.28
  4. Step 4: Simplify right side
    100,051,938.72x = 8,992,359,993,818,467
  5. Step 5: Solve for x
    x = 8,992,359,993,818,467/100,051,938.72
  6. Step 6: Final answer
    x = 89,876,919.02

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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.