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Finding the Fourth Proportional to 119,385.37, 164,763.88 and 68,404.86

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Solution

The fourth proportional to 119,385.37, 164,763.88 and 68,404.86 is: 94,405.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,385.37 : 164,763.88 = 68,404.86 : x
  2. Step 2: Convert to fraction form
    119,385.37/164,763.88 = 68,404.86/x
  3. Step 3: Cross multiply
    119,385.37x = 164,763.88 × 68,404.86
  4. Step 4: Simplify right side
    119,385.37x = 11,270,650,353.83
  5. Step 5: Solve for x
    x = 11,270,650,353.83/119,385.37
  6. Step 6: Final answer
    x = 94,405.63

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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.