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Finding the Fourth Proportional to 112,073.70, 168,438.60 and 110,105.40

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Solution

The fourth proportional to 112,073.70, 168,438.60 and 110,105.40 is: 165,480.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,073.70 : 168,438.60 = 110,105.40 : x
  2. Step 2: Convert to fraction form
    112,073.70/168,438.60 = 110,105.40/x
  3. Step 3: Cross multiply
    112,073.70x = 168,438.60 × 110,105.40
  4. Step 4: Simplify right side
    112,073.70x = 18,545,999,428.44
  5. Step 5: Solve for x
    x = 18,545,999,428.44/112,073.70
  6. Step 6: Final answer
    x = 165,480.39

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1.5x scale

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.