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Finding the Fourth Proportional to 119,138.04, 164,398.86 and 68,835.96

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Solution

The fourth proportional to 119,138.04, 164,398.86 and 68,835.96 is: 94,986.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,138.04 : 164,398.86 = 68,835.96 : x
  2. Step 2: Convert to fraction form
    119,138.04/164,398.86 = 68,835.96/x
  3. Step 3: Cross multiply
    119,138.04x = 164,398.86 × 68,835.96
  4. Step 4: Simplify right side
    119,138.04x = 11,316,553,351.01
  5. Step 5: Solve for x
    x = 11,316,553,351.01/119,138.04
  6. Step 6: Final answer
    x = 94,986.90

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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.