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Finding the Fourth Proportional to 112,074.60, 168,111.90 and 104,201.40

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Solution

The fourth proportional to 112,074.60, 168,111.90 and 104,201.40 is: 156,302.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,074.60 : 168,111.90 = 104,201.40 : x
  2. Step 2: Convert to fraction form
    112,074.60/168,111.90 = 104,201.40/x
  3. Step 3: Cross multiply
    112,074.60x = 168,111.90 × 104,201.40
  4. Step 4: Simplify right side
    112,074.60x = 17,517,495,336.66
  5. Step 5: Solve for x
    x = 17,517,495,336.66/112,074.60
  6. Step 6: Final answer
    x = 156,302.10

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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.