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Finding the Fourth Proportional to 118,593.77, 163,661.40 and 64,879.16

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Solution

The fourth proportional to 118,593.77, 163,661.40 and 64,879.16 is: 89,534.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,593.77 : 163,661.40 = 64,879.16 : x
  2. Step 2: Convert to fraction form
    118,593.77/163,661.40 = 64,879.16/x
  3. Step 3: Cross multiply
    118,593.77x = 163,661.40 × 64,879.16
  4. Step 4: Simplify right side
    118,593.77x = 10,618,213,338.12
  5. Step 5: Solve for x
    x = 10,618,213,338.12/118,593.77
  6. Step 6: Final answer
    x = 89,534.33

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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.