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Finding the Fourth Proportional to 91,537.60, 137,037.60 and 68,267.20

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Solution

The fourth proportional to 91,537.60, 137,037.60 and 68,267.20 is: 102,200.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,537.60 : 137,037.60 = 68,267.20 : x
  2. Step 2: Convert to fraction form
    91,537.60/137,037.60 = 68,267.20/x
  3. Step 3: Cross multiply
    91,537.60x = 137,037.60 × 68,267.20
  4. Step 4: Simplify right side
    91,537.60x = 9,355,173,246.72
  5. Step 5: Solve for x
    x = 9,355,173,246.72/91,537.60
  6. Step 6: Final answer
    x = 102,200.33

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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.