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Finding the Fourth Proportional to 110,438.30, 165,657.45 and 76,612.70

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Solution

The fourth proportional to 110,438.30, 165,657.45 and 76,612.70 is: 114,919.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,438.30 : 165,657.45 = 76,612.70 : x
  2. Step 2: Convert to fraction form
    110,438.30/165,657.45 = 76,612.70/x
  3. Step 3: Cross multiply
    110,438.30x = 165,657.45 × 76,612.70
  4. Step 4: Simplify right side
    110,438.30x = 12,691,464,519.62
  5. Step 5: Solve for x
    x = 12,691,464,519.62/110,438.30
  6. Step 6: Final answer
    x = 114,919.05

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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.