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Finding the Fourth Proportional to 112,884.60, 169,521.30 and 79,836.60

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Solution

The fourth proportional to 112,884.60, 169,521.30 and 79,836.60 is: 119,892.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,884.60 : 169,521.30 = 79,836.60 : x
  2. Step 2: Convert to fraction form
    112,884.60/169,521.30 = 79,836.60/x
  3. Step 3: Cross multiply
    112,884.60x = 169,521.30 × 79,836.60
  4. Step 4: Simplify right side
    112,884.60x = 13,534,004,219.58
  5. Step 5: Solve for x
    x = 13,534,004,219.58/112,884.60
  6. Step 6: Final answer
    x = 119,892.39

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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.