Home / 99,821.84-137,777.49-65,836.44

Finding the Fourth Proportional to 99,821.84, 137,777.49 and 65,836.44

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Solution

The fourth proportional to 99,821.84, 137,777.49 and 65,836.44 is: 90,869.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,821.84 : 137,777.49 = 65,836.44 : x
  2. Step 2: Convert to fraction form
    99,821.84/137,777.49 = 65,836.44/x
  3. Step 3: Cross multiply
    99,821.84x = 137,777.49 × 65,836.44
  4. Step 4: Simplify right side
    99,821.84x = 9,070,779,453.74
  5. Step 5: Solve for x
    x = 9,070,779,453.74/99,821.84
  6. Step 6: Final answer
    x = 90,869.69

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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.