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Finding the Fourth Proportional to 141,900.60, 212,559.30 and 71,819.40

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Solution

The fourth proportional to 141,900.60, 212,559.30 and 71,819.40 is: 107,581.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,900.60 : 212,559.30 = 71,819.40 : x
  2. Step 2: Convert to fraction form
    141,900.60/212,559.30 = 71,819.40/x
  3. Step 3: Cross multiply
    141,900.60x = 212,559.30 × 71,819.40
  4. Step 4: Simplify right side
    141,900.60x = 15,265,881,390.42
  5. Step 5: Solve for x
    x = 15,265,881,390.42/141,900.60
  6. Step 6: Final answer
    x = 107,581.51

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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.