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Finding the Fourth Proportional to 122,819.60, 184,121.40 and 83,248.40

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Solution

The fourth proportional to 122,819.60, 184,121.40 and 83,248.40 is: 124,799.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,819.60 : 184,121.40 = 83,248.40 : x
  2. Step 2: Convert to fraction form
    122,819.60/184,121.40 = 83,248.40/x
  3. Step 3: Cross multiply
    122,819.60x = 184,121.40 × 83,248.40
  4. Step 4: Simplify right side
    122,819.60x = 15,327,811,955.76
  5. Step 5: Solve for x
    x = 15,327,811,955.76/122,819.60
  6. Step 6: Final answer
    x = 124,799.40

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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.