Home / 115,103.31-158,842.86-66,714.57

Finding the Fourth Proportional to 115,103.31, 158,842.86 and 66,714.57

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Solution

The fourth proportional to 115,103.31, 158,842.86 and 66,714.57 is: 92,066.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,103.31 : 158,842.86 = 66,714.57 : x
  2. Step 2: Convert to fraction form
    115,103.31/158,842.86 = 66,714.57/x
  3. Step 3: Cross multiply
    115,103.31x = 158,842.86 × 66,714.57
  4. Step 4: Simplify right side
    115,103.31x = 10,597,133,102.47
  5. Step 5: Solve for x
    x = 10,597,133,102.47/115,103.31
  6. Step 6: Final answer
    x = 92,066.28

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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.