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Finding the Fourth Proportional to 165,478.35, 228,361.11 and 90,027.39

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Solution

The fourth proportional to 165,478.35, 228,361.11 and 90,027.39 is: 124,238.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,478.35 : 228,361.11 = 90,027.39 : x
  2. Step 2: Convert to fraction form
    165,478.35/228,361.11 = 90,027.39/x
  3. Step 3: Cross multiply
    165,478.35x = 228,361.11 × 90,027.39
  4. Step 4: Simplify right side
    165,478.35x = 20,558,754,710.80
  5. Step 5: Solve for x
    x = 20,558,754,710.80/165,478.35
  6. Step 6: Final answer
    x = 124,238.34

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1.5x scale

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.