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Finding the Fourth Proportional to 165,381.70, 228,355.30 and 127,080.87

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Solution

The fourth proportional to 165,381.70, 228,355.30 and 127,080.87 is: 175,470.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,381.70 : 228,355.30 = 127,080.87 : x
  2. Step 2: Convert to fraction form
    165,381.70/228,355.30 = 127,080.87/x
  3. Step 3: Cross multiply
    165,381.70x = 228,355.30 × 127,080.87
  4. Step 4: Simplify right side
    165,381.70x = 29,019,591,422.38
  5. Step 5: Solve for x
    x = 29,019,591,422.38/165,381.70
  6. Step 6: Final answer
    x = 175,470.39

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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.