Home / 136,307.04-188,131.68-79,732.32

Finding the Fourth Proportional to 136,307.04, 188,131.68 and 79,732.32

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Solution

The fourth proportional to 136,307.04, 188,131.68 and 79,732.32 is: 110,046.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,307.04 : 188,131.68 = 79,732.32 : x
  2. Step 2: Convert to fraction form
    136,307.04/188,131.68 = 79,732.32/x
  3. Step 3: Cross multiply
    136,307.04x = 188,131.68 × 79,732.32
  4. Step 4: Simplify right side
    136,307.04x = 15,000,175,311.90
  5. Step 5: Solve for x
    x = 15,000,175,311.90/136,307.04
  6. Step 6: Final answer
    x = 110,046.96

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1.5x scale

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.