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Finding the Fourth Proportional to 99,807.29, 149,789.14 and 69,625.21

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Solution

The fourth proportional to 99,807.29, 149,789.14 and 69,625.21 is: 104,492.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,807.29 : 149,789.14 = 69,625.21 : x
  2. Step 2: Convert to fraction form
    99,807.29/149,789.14 = 69,625.21/x
  3. Step 3: Cross multiply
    99,807.29x = 149,789.14 × 69,625.21
  4. Step 4: Simplify right side
    99,807.29x = 10,429,100,328.22
  5. Step 5: Solve for x
    x = 10,429,100,328.22/99,807.29
  6. Step 6: Final answer
    x = 104,492.37

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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.