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Finding the Fourth Proportional to 122,607.60, 183,911.40 and 66,620.40

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Solution

The fourth proportional to 122,607.60, 183,911.40 and 66,620.40 is: 99,930.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,607.60 : 183,911.40 = 66,620.40 : x
  2. Step 2: Convert to fraction form
    122,607.60/183,911.40 = 66,620.40/x
  3. Step 3: Cross multiply
    122,607.60x = 183,911.40 × 66,620.40
  4. Step 4: Simplify right side
    122,607.60x = 12,252,251,032.56
  5. Step 5: Solve for x
    x = 12,252,251,032.56/122,607.60
  6. Step 6: Final answer
    x = 99,930.60

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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.