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Finding the Fourth Proportional to 99,002, 148,131 and 69,477.44

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Solution

The fourth proportional to 99,002, 148,131 and 69,477.44 is: 103,955.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,002 : 148,131 = 69,477.44 : x
  2. Step 2: Convert to fraction form
    99,002/148,131 = 69,477.44/x
  3. Step 3: Cross multiply
    99,002x = 148,131 × 69,477.44
  4. Step 4: Simplify right side
    99,002x = 10,291,762,664.64
  5. Step 5: Solve for x
    x = 10,291,762,664.64/99,002
  6. Step 6: Final answer
    x = 103,955.10

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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.