Home / 115,108.32-158,849.74-66,719.58

Finding the Fourth Proportional to 115,108.32, 158,849.74 and 66,719.58

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Solution

The fourth proportional to 115,108.32, 158,849.74 and 66,719.58 is: 92,073.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,108.32 : 158,849.74 = 66,719.58 : x
  2. Step 2: Convert to fraction form
    115,108.32/158,849.74 = 66,719.58/x
  3. Step 3: Cross multiply
    115,108.32x = 158,849.74 × 66,719.58
  4. Step 4: Simplify right side
    115,108.32x = 10,598,387,935.91
  5. Step 5: Solve for x
    x = 10,598,387,935.91/115,108.32
  6. Step 6: Final answer
    x = 92,073.17

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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.