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Finding the Fourth Proportional to 239,046.34, 358,346.76 and 81,166.81

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Solution

The fourth proportional to 239,046.34, 358,346.76 and 81,166.81 is: 121,674.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,046.34 : 358,346.76 = 81,166.81 : x
  2. Step 2: Convert to fraction form
    239,046.34/358,346.76 = 81,166.81/x
  3. Step 3: Cross multiply
    239,046.34x = 358,346.76 × 81,166.81
  4. Step 4: Simplify right side
    239,046.34x = 29,085,863,383.04
  5. Step 5: Solve for x
    x = 29,085,863,383.04/239,046.34
  6. Step 6: Final answer
    x = 121,674.58

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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.