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Finding the Fourth Proportional to 169,649.60, 254,578.40 and 69,857.60

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Solution

The fourth proportional to 169,649.60, 254,578.40 and 69,857.60 is: 104,829.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,649.60 : 254,578.40 = 69,857.60 : x
  2. Step 2: Convert to fraction form
    169,649.60/254,578.40 = 69,857.60/x
  3. Step 3: Cross multiply
    169,649.60x = 254,578.40 × 69,857.60
  4. Step 4: Simplify right side
    169,649.60x = 17,784,236,035.84
  5. Step 5: Solve for x
    x = 17,784,236,035.84/169,649.60
  6. Step 6: Final answer
    x = 104,829.22

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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.