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Finding the Fourth Proportional to 118,394.67, 163,381.95 and 64,679.91

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Solution

The fourth proportional to 118,394.67, 163,381.95 and 64,679.91 is: 89,256.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,394.67 : 163,381.95 = 64,679.91 : x
  2. Step 2: Convert to fraction form
    118,394.67/163,381.95 = 64,679.91/x
  3. Step 3: Cross multiply
    118,394.67x = 163,381.95 × 64,679.91
  4. Step 4: Simplify right side
    118,394.67x = 10,567,529,821.62
  5. Step 5: Solve for x
    x = 10,567,529,821.62/118,394.67
  6. Step 6: Final answer
    x = 89,256.80

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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.