Home / 165,734.08-228,720-90,286.72

Finding the Fourth Proportional to 165,734.08, 228,720 and 90,286.72

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Solution

The fourth proportional to 165,734.08, 228,720 and 90,286.72 is: 124,599.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,734.08 : 228,720 = 90,286.72 : x
  2. Step 2: Convert to fraction form
    165,734.08/228,720 = 90,286.72/x
  3. Step 3: Cross multiply
    165,734.08x = 228,720 × 90,286.72
  4. Step 4: Simplify right side
    165,734.08x = 20,650,378,598.40
  5. Step 5: Solve for x
    x = 20,650,378,598.40/165,734.08
  6. Step 6: Final answer
    x = 124,599.47

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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.