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Finding the Fourth Proportional to 99,766.76, 149,650.16 and 66,551.72

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Solution

The fourth proportional to 99,766.76, 149,650.16 and 66,551.72 is: 99,827.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,766.76 : 149,650.16 = 66,551.72 : x
  2. Step 2: Convert to fraction form
    99,766.76/149,650.16 = 66,551.72/x
  3. Step 3: Cross multiply
    99,766.76x = 149,650.16 × 66,551.72
  4. Step 4: Simplify right side
    99,766.76x = 9,959,474,465.27
  5. Step 5: Solve for x
    x = 9,959,474,465.27/99,766.76
  6. Step 6: Final answer
    x = 99,827.59

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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.