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Finding the Fourth Proportional to 117,044.64, 175,411.44 and 67,140

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Solution

The fourth proportional to 117,044.64, 175,411.44 and 67,140 is: 100,620.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,044.64 : 175,411.44 = 67,140 : x
  2. Step 2: Convert to fraction form
    117,044.64/175,411.44 = 67,140/x
  3. Step 3: Cross multiply
    117,044.64x = 175,411.44 × 67,140
  4. Step 4: Simplify right side
    117,044.64x = 11,777,124,081.60
  5. Step 5: Solve for x
    x = 11,777,124,081.60/117,044.64
  6. Step 6: Final answer
    x = 100,620.79

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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.