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Finding the Fourth Proportional to 110,008.80, 165,207.60 and 85,109.40

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Solution

The fourth proportional to 110,008.80, 165,207.60 and 85,109.40 is: 127,814.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,008.80 : 165,207.60 = 85,109.40 : x
  2. Step 2: Convert to fraction form
    110,008.80/165,207.60 = 85,109.40/x
  3. Step 3: Cross multiply
    110,008.80x = 165,207.60 × 85,109.40
  4. Step 4: Simplify right side
    110,008.80x = 14,060,719,711.44
  5. Step 5: Solve for x
    x = 14,060,719,711.44/110,008.80
  6. Step 6: Final answer
    x = 127,814.50

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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.