Home / 100,215.81-138,293.77-59,951.83

Finding the Fourth Proportional to 100,215.81, 138,293.77 and 59,951.83

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Solution

The fourth proportional to 100,215.81, 138,293.77 and 59,951.83 is: 82,731.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,215.81 : 138,293.77 = 59,951.83 : x
  2. Step 2: Convert to fraction form
    100,215.81/138,293.77 = 59,951.83/x
  3. Step 3: Cross multiply
    100,215.81x = 138,293.77 × 59,951.83
  4. Step 4: Simplify right side
    100,215.81x = 8,290,964,589.10
  5. Step 5: Solve for x
    x = 8,290,964,589.10/100,215.81
  6. Step 6: Final answer
    x = 82,731.10

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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.