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Finding the Fourth Proportional to 118,608.98, 163,684.48 and 64,894

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Solution

The fourth proportional to 118,608.98, 163,684.48 and 64,894 is: 89,555.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,608.98 : 163,684.48 = 64,894 : x
  2. Step 2: Convert to fraction form
    118,608.98/163,684.48 = 64,894/x
  3. Step 3: Cross multiply
    118,608.98x = 163,684.48 × 64,894
  4. Step 4: Simplify right side
    118,608.98x = 10,622,140,645.12
  5. Step 5: Solve for x
    x = 10,622,140,645.12/118,608.98
  6. Step 6: Final answer
    x = 89,555.96

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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.