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Finding the Fourth Proportional to 99,511.68, 137,281.72 and 67,235.88

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Solution

The fourth proportional to 99,511.68, 137,281.72 and 67,235.88 is: 92,755.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,511.68 : 137,281.72 = 67,235.88 : x
  2. Step 2: Convert to fraction form
    99,511.68/137,281.72 = 67,235.88/x
  3. Step 3: Cross multiply
    99,511.68x = 137,281.72 × 67,235.88
  4. Step 4: Simplify right side
    99,511.68x = 9,230,257,252.11
  5. Step 5: Solve for x
    x = 9,230,257,252.11/99,511.68
  6. Step 6: Final answer
    x = 92,755.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.