Home / 165,788.70-228,788.40-90,337.20

Finding the Fourth Proportional to 165,788.70, 228,788.40 and 90,337.20

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Solution

The fourth proportional to 165,788.70, 228,788.40 and 90,337.20 is: 124,665.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,788.70 : 228,788.40 = 90,337.20 : x
  2. Step 2: Convert to fraction form
    165,788.70/228,788.40 = 90,337.20/x
  3. Step 3: Cross multiply
    165,788.70x = 228,788.40 × 90,337.20
  4. Step 4: Simplify right side
    165,788.70x = 20,668,103,448.48
  5. Step 5: Solve for x
    x = 20,668,103,448.48/165,788.70
  6. Step 6: Final answer
    x = 124,665.33

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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.