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Finding the Fourth Proportional to 122,110.40, 183,165.60 and 101,115.20

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Solution

The fourth proportional to 122,110.40, 183,165.60 and 101,115.20 is: 151,672.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,110.40 : 183,165.60 = 101,115.20 : x
  2. Step 2: Convert to fraction form
    122,110.40/183,165.60 = 101,115.20/x
  3. Step 3: Cross multiply
    122,110.40x = 183,165.60 × 101,115.20
  4. Step 4: Simplify right side
    122,110.40x = 18,520,826,277.12
  5. Step 5: Solve for x
    x = 18,520,826,277.12/122,110.40
  6. Step 6: Final answer
    x = 151,672.80

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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.