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Finding the Fourth Proportional to 117,894.60, 162,689.57 and 64,178.50

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Solution

The fourth proportional to 117,894.60, 162,689.57 and 64,178.50 is: 88,563.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,894.60 : 162,689.57 = 64,178.50 : x
  2. Step 2: Convert to fraction form
    117,894.60/162,689.57 = 64,178.50/x
  3. Step 3: Cross multiply
    117,894.60x = 162,689.57 × 64,178.50
  4. Step 4: Simplify right side
    117,894.60x = 10,441,172,568.25
  5. Step 5: Solve for x
    x = 10,441,172,568.25/117,894.60
  6. Step 6: Final answer
    x = 88,563.62

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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.