Home / 100,435.55-138,599.91-57,993.17

Finding the Fourth Proportional to 100,435.55, 138,599.91 and 57,993.17

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Solution

The fourth proportional to 100,435.55, 138,599.91 and 57,993.17 is: 80,029.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,435.55 : 138,599.91 = 57,993.17 : x
  2. Step 2: Convert to fraction form
    100,435.55/138,599.91 = 57,993.17/x
  3. Step 3: Cross multiply
    100,435.55x = 138,599.91 × 57,993.17
  4. Step 4: Simplify right side
    100,435.55x = 8,037,847,449.62
  5. Step 5: Solve for x
    x = 8,037,847,449.62/100,435.55
  6. Step 6: Final answer
    x = 80,029.91

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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.