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Finding the Fourth Proportional to 108,139.60, 162,209.40 and 101,578.60

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Solution

The fourth proportional to 108,139.60, 162,209.40 and 101,578.60 is: 152,367.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,139.60 : 162,209.40 = 101,578.60 : x
  2. Step 2: Convert to fraction form
    108,139.60/162,209.40 = 101,578.60/x
  3. Step 3: Cross multiply
    108,139.60x = 162,209.40 × 101,578.60
  4. Step 4: Simplify right side
    108,139.60x = 16,477,003,758.84
  5. Step 5: Solve for x
    x = 16,477,003,758.84/108,139.60
  6. Step 6: Final answer
    x = 152,367.90

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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.