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Finding the Fourth Proportional to 119,387.37, 164,766.64 and 68,406.86

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Solution

The fourth proportional to 119,387.37, 164,766.64 and 68,406.86 is: 94,408.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,387.37 : 164,766.64 = 68,406.86 : x
  2. Step 2: Convert to fraction form
    119,387.37/164,766.64 = 68,406.86/x
  3. Step 3: Cross multiply
    119,387.37x = 164,766.64 × 68,406.86
  4. Step 4: Simplify right side
    119,387.37x = 11,271,168,475.15
  5. Step 5: Solve for x
    x = 11,271,168,475.15/119,387.37
  6. Step 6: Final answer
    x = 94,408.38

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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.