Home / 90,634.60-135,951.90-69,615.10

Finding the Fourth Proportional to 90,634.60, 135,951.90 and 69,615.10

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Solution

The fourth proportional to 90,634.60, 135,951.90 and 69,615.10 is: 104,422.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,634.60 : 135,951.90 = 69,615.10 : x
  2. Step 2: Convert to fraction form
    90,634.60/135,951.90 = 69,615.10/x
  3. Step 3: Cross multiply
    90,634.60x = 135,951.90 × 69,615.10
  4. Step 4: Simplify right side
    90,634.60x = 9,464,305,113.69
  5. Step 5: Solve for x
    x = 9,464,305,113.69/90,634.60
  6. Step 6: Final answer
    x = 104,422.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.