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Finding the Fourth Proportional to 112,077.60, 168,310.80 and 108,578.40

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Solution

The fourth proportional to 112,077.60, 168,310.80 and 108,578.40 is: 163,055.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,077.60 : 168,310.80 = 108,578.40 : x
  2. Step 2: Convert to fraction form
    112,077.60/168,310.80 = 108,578.40/x
  3. Step 3: Cross multiply
    112,077.60x = 168,310.80 × 108,578.40
  4. Step 4: Simplify right side
    112,077.60x = 18,274,917,366.72
  5. Step 5: Solve for x
    x = 18,274,917,366.72/112,077.60
  6. Step 6: Final answer
    x = 163,055.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.