Home / 110,690.40-165,841.20-90,861.60

Finding the Fourth Proportional to 110,690.40, 165,841.20 and 90,861.60

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Solution

The fourth proportional to 110,690.40, 165,841.20 and 90,861.60 is: 136,132.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,690.40 : 165,841.20 = 90,861.60 : x
  2. Step 2: Convert to fraction form
    110,690.40/165,841.20 = 90,861.60/x
  3. Step 3: Cross multiply
    110,690.40x = 165,841.20 × 90,861.60
  4. Step 4: Simplify right side
    110,690.40x = 15,068,596,777.92
  5. Step 5: Solve for x
    x = 15,068,596,777.92/110,690.40
  6. Step 6: Final answer
    x = 136,132.82

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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.