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Finding the Fourth Proportional to 169,893.80, 255,035.10 and 99,812.60

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Solution

The fourth proportional to 169,893.80, 255,035.10 and 99,812.60 is: 149,833.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,893.80 : 255,035.10 = 99,812.60 : x
  2. Step 2: Convert to fraction form
    169,893.80/255,035.10 = 99,812.60/x
  3. Step 3: Cross multiply
    169,893.80x = 255,035.10 × 99,812.60
  4. Step 4: Simplify right side
    169,893.80x = 25,455,716,422.26
  5. Step 5: Solve for x
    x = 25,455,716,422.26/169,893.80
  6. Step 6: Final answer
    x = 149,833.11

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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.