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Finding the Fourth Proportional to 158,371.37, 218,552.52 and 86,753.93

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Solution

The fourth proportional to 158,371.37, 218,552.52 and 86,753.93 is: 119,720.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,371.37 : 218,552.52 = 86,753.93 : x
  2. Step 2: Convert to fraction form
    158,371.37/218,552.52 = 86,753.93/x
  3. Step 3: Cross multiply
    158,371.37x = 218,552.52 × 86,753.93
  4. Step 4: Simplify right side
    158,371.37x = 18,960,288,928.64
  5. Step 5: Solve for x
    x = 18,960,288,928.64/158,371.37
  6. Step 6: Final answer
    x = 119,720.44

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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.