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Finding the Fourth Proportional to 165,361.60, 228,192.72 and 89,910.16

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Solution

The fourth proportional to 165,361.60, 228,192.72 and 89,910.16 is: 124,072.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,361.60 : 228,192.72 = 89,910.16 : x
  2. Step 2: Convert to fraction form
    165,361.60/228,192.72 = 89,910.16/x
  3. Step 3: Cross multiply
    165,361.60x = 228,192.72 × 89,910.16
  4. Step 4: Simplify right side
    165,361.60x = 20,516,843,966.04
  5. Step 5: Solve for x
    x = 20,516,843,966.04/165,361.60
  6. Step 6: Final answer
    x = 124,072.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.