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Finding the Fourth Proportional to 109,070.80, 163,606.20 and 73,819.60

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Solution

The fourth proportional to 109,070.80, 163,606.20 and 73,819.60 is: 110,729.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,070.80 : 163,606.20 = 73,819.60 : x
  2. Step 2: Convert to fraction form
    109,070.80/163,606.20 = 73,819.60/x
  3. Step 3: Cross multiply
    109,070.80x = 163,606.20 × 73,819.60
  4. Step 4: Simplify right side
    109,070.80x = 12,077,344,241.52
  5. Step 5: Solve for x
    x = 12,077,344,241.52/109,070.80
  6. Step 6: Final answer
    x = 110,729.40

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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.