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Finding the Fourth Proportional to 99,772.02, 149,658.03 and 66,556.98

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Solution

The fourth proportional to 99,772.02, 149,658.03 and 66,556.98 is: 99,835.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,772.02 : 149,658.03 = 66,556.98 : x
  2. Step 2: Convert to fraction form
    99,772.02/149,658.03 = 66,556.98/x
  3. Step 3: Cross multiply
    99,772.02x = 149,658.03 × 66,556.98
  4. Step 4: Simplify right side
    99,772.02x = 9,960,786,509.55
  5. Step 5: Solve for x
    x = 9,960,786,509.55/99,772.02
  6. Step 6: Final answer
    x = 99,835.47

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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.