Home / 165,741.12-228,722.40-90,289.44

Finding the Fourth Proportional to 165,741.12, 228,722.40 and 90,289.44

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Solution

The fourth proportional to 165,741.12, 228,722.40 and 90,289.44 is: 124,599.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,741.12 : 228,722.40 = 90,289.44 : x
  2. Step 2: Convert to fraction form
    165,741.12/228,722.40 = 90,289.44/x
  3. Step 3: Cross multiply
    165,741.12x = 228,722.40 × 90,289.44
  4. Step 4: Simplify right side
    165,741.12x = 20,651,217,411.46
  5. Step 5: Solve for x
    x = 20,651,217,411.46/165,741.12
  6. Step 6: Final answer
    x = 124,599.24

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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.