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Finding the Fourth Proportional to 95,640.60, 143,460.90 and 90,197.40

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Solution

The fourth proportional to 95,640.60, 143,460.90 and 90,197.40 is: 135,296.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,640.60 : 143,460.90 = 90,197.40 : x
  2. Step 2: Convert to fraction form
    95,640.60/143,460.90 = 90,197.40/x
  3. Step 3: Cross multiply
    95,640.60x = 143,460.90 × 90,197.40
  4. Step 4: Simplify right side
    95,640.60x = 12,939,800,181.66
  5. Step 5: Solve for x
    x = 12,939,800,181.66/95,640.60
  6. Step 6: Final answer
    x = 135,296.10

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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.