Home / 100,303.80-138,433.98-57,854.04

Finding the Fourth Proportional to 100,303.80, 138,433.98 and 57,854.04

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Solution

The fourth proportional to 100,303.80, 138,433.98 and 57,854.04 is: 79,847.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,303.80 : 138,433.98 = 57,854.04 : x
  2. Step 2: Convert to fraction form
    100,303.80/138,433.98 = 57,854.04/x
  3. Step 3: Cross multiply
    100,303.80x = 138,433.98 × 57,854.04
  4. Step 4: Simplify right side
    100,303.80x = 8,008,965,016.28
  5. Step 5: Solve for x
    x = 8,008,965,016.28/100,303.80
  6. Step 6: Final answer
    x = 79,847.07

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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.