Home / 136,942.90-205,414.35-91,842.10

Finding the Fourth Proportional to 136,942.90, 205,414.35 and 91,842.10

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Solution

The fourth proportional to 136,942.90, 205,414.35 and 91,842.10 is: 137,763.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,942.90 : 205,414.35 = 91,842.10 : x
  2. Step 2: Convert to fraction form
    136,942.90/205,414.35 = 91,842.10/x
  3. Step 3: Cross multiply
    136,942.90x = 205,414.35 × 91,842.10
  4. Step 4: Simplify right side
    136,942.90x = 18,865,685,274.14
  5. Step 5: Solve for x
    x = 18,865,685,274.14/136,942.90
  6. Step 6: Final answer
    x = 137,763.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.