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Finding the Fourth Proportional to 110,120.10, 165,180.15 and 97,872.90

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Solution

The fourth proportional to 110,120.10, 165,180.15 and 97,872.90 is: 146,809.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,120.10 : 165,180.15 = 97,872.90 : x
  2. Step 2: Convert to fraction form
    110,120.10/165,180.15 = 97,872.90/x
  3. Step 3: Cross multiply
    110,120.10x = 165,180.15 × 97,872.90
  4. Step 4: Simplify right side
    110,120.10x = 16,166,660,302.94
  5. Step 5: Solve for x
    x = 16,166,660,302.94/110,120.10
  6. Step 6: Final answer
    x = 146,809.35

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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.