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Finding the Fourth Proportional to 159,215.94, 238,881.32 and 80,270.71

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Solution

The fourth proportional to 159,215.94, 238,881.32 and 80,270.71 is: 120,435.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,215.94 : 238,881.32 = 80,270.71 : x
  2. Step 2: Convert to fraction form
    159,215.94/238,881.32 = 80,270.71/x
  3. Step 3: Cross multiply
    159,215.94x = 238,881.32 × 80,270.71
  4. Step 4: Simplify right side
    159,215.94x = 19,175,173,162.14
  5. Step 5: Solve for x
    x = 19,175,173,162.14/159,215.94
  6. Step 6: Final answer
    x = 120,435.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.