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Finding the Fourth Proportional to 239,045.84, 358,346.01 and 81,166.31

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Solution

The fourth proportional to 239,045.84, 358,346.01 and 81,166.31 is: 121,673.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,045.84 : 358,346.01 = 81,166.31 : x
  2. Step 2: Convert to fraction form
    239,045.84/358,346.01 = 81,166.31/x
  3. Step 3: Cross multiply
    239,045.84x = 358,346.01 × 81,166.31
  4. Step 4: Simplify right side
    239,045.84x = 29,085,623,334.92
  5. Step 5: Solve for x
    x = 29,085,623,334.92/239,045.84
  6. Step 6: Final answer
    x = 121,673.83

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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.