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Finding the Fourth Proportional to 158,920.92, 219,505.14 and 118,812.96

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Solution

The fourth proportional to 158,920.92, 219,505.14 and 118,812.96 is: 164,107.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,920.92 : 219,505.14 = 118,812.96 : x
  2. Step 2: Convert to fraction form
    158,920.92/219,505.14 = 118,812.96/x
  3. Step 3: Cross multiply
    158,920.92x = 219,505.14 × 118,812.96
  4. Step 4: Simplify right side
    158,920.92x = 26,080,055,418.61
  5. Step 5: Solve for x
    x = 26,080,055,418.61/158,920.92
  6. Step 6: Final answer
    x = 164,107.13

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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.