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Finding the Fourth Proportional to 141,750.60, 212,625.90 and 85,763.40

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Solution

The fourth proportional to 141,750.60, 212,625.90 and 85,763.40 is: 128,645.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,750.60 : 212,625.90 = 85,763.40 : x
  2. Step 2: Convert to fraction form
    141,750.60/212,625.90 = 85,763.40/x
  3. Step 3: Cross multiply
    141,750.60x = 212,625.90 × 85,763.40
  4. Step 4: Simplify right side
    141,750.60x = 18,235,520,112.06
  5. Step 5: Solve for x
    x = 18,235,520,112.06/141,750.60
  6. Step 6: Final answer
    x = 128,645.10

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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.