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Finding the Fourth Proportional to 110,114.88, 165,172.32 and 90,579.84

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Solution

The fourth proportional to 110,114.88, 165,172.32 and 90,579.84 is: 135,869.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,114.88 : 165,172.32 = 90,579.84 : x
  2. Step 2: Convert to fraction form
    110,114.88/165,172.32 = 90,579.84/x
  3. Step 3: Cross multiply
    110,114.88x = 165,172.32 × 90,579.84
  4. Step 4: Simplify right side
    110,114.88x = 14,961,282,318.03
  5. Step 5: Solve for x
    x = 14,961,282,318.03/110,114.88
  6. Step 6: Final answer
    x = 135,869.76

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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.