Home / 136,320.20-188,087.74-81,881.52

Finding the Fourth Proportional to 136,320.20, 188,087.74 and 81,881.52

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Solution

The fourth proportional to 136,320.20, 188,087.74 and 81,881.52 is: 112,975.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,320.20 : 188,087.74 = 81,881.52 : x
  2. Step 2: Convert to fraction form
    136,320.20/188,087.74 = 81,881.52/x
  3. Step 3: Cross multiply
    136,320.20x = 188,087.74 × 81,881.52
  4. Step 4: Simplify right side
    136,320.20x = 15,400,910,044.56
  5. Step 5: Solve for x
    x = 15,400,910,044.56/136,320.20
  6. Step 6: Final answer
    x = 112,975.99

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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.