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Finding the Fourth Proportional to 118,538.64, 163,578.11 and 67,562.42

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Solution

The fourth proportional to 118,538.64, 163,578.11 and 67,562.42 is: 93,233.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,538.64 : 163,578.11 = 67,562.42 : x
  2. Step 2: Convert to fraction form
    118,538.64/163,578.11 = 67,562.42/x
  3. Step 3: Cross multiply
    118,538.64x = 163,578.11 × 67,562.42
  4. Step 4: Simplify right side
    118,538.64x = 11,051,731,814.92
  5. Step 5: Solve for x
    x = 11,051,731,814.92/118,538.64
  6. Step 6: Final answer
    x = 93,233.16

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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.