Home / 99,786.02-137,701.26-59,479

Finding the Fourth Proportional to 99,786.02, 137,701.26 and 59,479

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Solution

The fourth proportional to 99,786.02, 137,701.26 and 59,479 is: 82,078.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,786.02 : 137,701.26 = 59,479 : x
  2. Step 2: Convert to fraction form
    99,786.02/137,701.26 = 59,479/x
  3. Step 3: Cross multiply
    99,786.02x = 137,701.26 × 59,479
  4. Step 4: Simplify right side
    99,786.02x = 8,190,333,243.54
  5. Step 5: Solve for x
    x = 8,190,333,243.54/99,786.02
  6. Step 6: Final answer
    x = 82,078.97

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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.