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Finding the Fourth Proportional to 117,866.39, 162,659.06 and 64,154.88

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Solution

The fourth proportional to 117,866.39, 162,659.06 and 64,154.88 is: 88,535.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,866.39 : 162,659.06 = 64,154.88 : x
  2. Step 2: Convert to fraction form
    117,866.39/162,659.06 = 64,154.88/x
  3. Step 3: Cross multiply
    117,866.39x = 162,659.06 × 64,154.88
  4. Step 4: Simplify right side
    117,866.39x = 10,435,372,635.60
  5. Step 5: Solve for x
    x = 10,435,372,635.60/117,866.39
  6. Step 6: Final answer
    x = 88,535.61

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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.