Home / 89,642,761.20-134,464,141.80-81,990,010.80

Finding the Fourth Proportional to 89,642,761.20, 134,464,141.80 and 81,990,010.80

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Solution

The fourth proportional to 89,642,761.20, 134,464,141.80 and 81,990,010.80 is: 122,985,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,642,761.20 : 134,464,141.80 = 81,990,010.80 : x
  2. Step 2: Convert to fraction form
    89,642,761.20/134,464,141.80 = 81,990,010.80/x
  3. Step 3: Cross multiply
    89,642,761.20x = 134,464,141.80 × 81,990,010.80
  4. Step 4: Simplify right side
    89,642,761.20x = 11,024,716,438,394,732
  5. Step 5: Solve for x
    x = 11,024,716,438,394,732/89,642,761.20
  6. Step 6: Final answer
    x = 122,985,016.20

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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.