Home / 136,352.16-188,120.88-79,723.44

Finding the Fourth Proportional to 136,352.16, 188,120.88 and 79,723.44

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Solution

The fourth proportional to 136,352.16, 188,120.88 and 79,723.44 is: 109,991.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,352.16 : 188,120.88 = 79,723.44 : x
  2. Step 2: Convert to fraction form
    136,352.16/188,120.88 = 79,723.44/x
  3. Step 3: Cross multiply
    136,352.16x = 188,120.88 × 79,723.44
  4. Step 4: Simplify right side
    136,352.16x = 14,997,643,689.43
  5. Step 5: Solve for x
    x = 14,997,643,689.43/136,352.16
  6. Step 6: Final answer
    x = 109,991.98

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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.