Home / 136,109.88-187,830.62-75,680.04

Finding the Fourth Proportional to 136,109.88, 187,830.62 and 75,680.04

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Solution

The fourth proportional to 136,109.88, 187,830.62 and 75,680.04 is: 104,437.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,109.88 : 187,830.62 = 75,680.04 : x
  2. Step 2: Convert to fraction form
    136,109.88/187,830.62 = 75,680.04/x
  3. Step 3: Cross multiply
    136,109.88x = 187,830.62 × 75,680.04
  4. Step 4: Simplify right side
    136,109.88x = 14,215,028,834.82
  5. Step 5: Solve for x
    x = 14,215,028,834.82/136,109.88
  6. Step 6: Final answer
    x = 104,437.89

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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.