Home / 165,782.70-228,780.05-90,331.20

Finding the Fourth Proportional to 165,782.70, 228,780.05 and 90,331.20

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Solution

The fourth proportional to 165,782.70, 228,780.05 and 90,331.20 is: 124,657.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,782.70 : 228,780.05 = 90,331.20 : x
  2. Step 2: Convert to fraction form
    165,782.70/228,780.05 = 90,331.20/x
  3. Step 3: Cross multiply
    165,782.70x = 228,780.05 × 90,331.20
  4. Step 4: Simplify right side
    165,782.70x = 20,665,976,000.90
  5. Step 5: Solve for x
    x = 20,665,976,000.90/165,782.70
  6. Step 6: Final answer
    x = 124,657.01

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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.