Home / 115,940.78-159,997.92-64,261.17

Finding the Fourth Proportional to 115,940.78, 159,997.92 and 64,261.17

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Solution

The fourth proportional to 115,940.78, 159,997.92 and 64,261.17 is: 88,680.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,940.78 : 159,997.92 = 64,261.17 : x
  2. Step 2: Convert to fraction form
    115,940.78/159,997.92 = 64,261.17/x
  3. Step 3: Cross multiply
    115,940.78x = 159,997.92 × 64,261.17
  4. Step 4: Simplify right side
    115,940.78x = 10,281,653,536.77
  5. Step 5: Solve for x
    x = 10,281,653,536.77/115,940.78
  6. Step 6: Final answer
    x = 88,680.22

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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.