Home / 165,681.20-228,642.66-90,229.64

Finding the Fourth Proportional to 165,681.20, 228,642.66 and 90,229.64

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Solution

The fourth proportional to 165,681.20, 228,642.66 and 90,229.64 is: 124,518.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,681.20 : 228,642.66 = 90,229.64 : x
  2. Step 2: Convert to fraction form
    165,681.20/228,642.66 = 90,229.64/x
  3. Step 3: Cross multiply
    165,681.20x = 228,642.66 × 90,229.64
  4. Step 4: Simplify right side
    165,681.20x = 20,630,344,900.44
  5. Step 5: Solve for x
    x = 20,630,344,900.44/165,681.20
  6. Step 6: Final answer
    x = 124,518.32

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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.