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Finding the Fourth Proportional to 118,575.35, 163,630.51 and 64,859.21

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Solution

The fourth proportional to 118,575.35, 163,630.51 and 64,859.21 is: 89,503.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,575.35 : 163,630.51 = 64,859.21 : x
  2. Step 2: Convert to fraction form
    118,575.35/163,630.51 = 64,859.21/x
  3. Step 3: Cross multiply
    118,575.35x = 163,630.51 × 64,859.21
  4. Step 4: Simplify right side
    118,575.35x = 10,612,945,857.43
  5. Step 5: Solve for x
    x = 10,612,945,857.43/118,575.35
  6. Step 6: Final answer
    x = 89,503.81

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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.