Home / 136,197.79-187,876.14-81,736.03

Finding the Fourth Proportional to 136,197.79, 187,876.14 and 81,736.03

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Solution

The fourth proportional to 136,197.79, 187,876.14 and 81,736.03 is: 112,749.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,197.79 : 187,876.14 = 81,736.03 : x
  2. Step 2: Convert to fraction form
    136,197.79/187,876.14 = 81,736.03/x
  3. Step 3: Cross multiply
    136,197.79x = 187,876.14 × 81,736.03
  4. Step 4: Simplify right side
    136,197.79x = 15,356,249,815.32
  5. Step 5: Solve for x
    x = 15,356,249,815.32/136,197.79
  6. Step 6: Final answer
    x = 112,749.63

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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.