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Finding the Fourth Proportional to 118,579.98, 163,636.88 and 64,863.84

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Solution

The fourth proportional to 118,579.98, 163,636.88 and 64,863.84 is: 89,510.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,579.98 : 163,636.88 = 64,863.84 : x
  2. Step 2: Convert to fraction form
    118,579.98/163,636.88 = 64,863.84/x
  3. Step 3: Cross multiply
    118,579.98x = 163,636.88 × 64,863.84
  4. Step 4: Simplify right side
    118,579.98x = 10,614,116,402.42
  5. Step 5: Solve for x
    x = 10,614,116,402.42/118,579.98
  6. Step 6: Final answer
    x = 89,510.19

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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.