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Finding the Fourth Proportional to 122,947.80, 184,421.70 and 109,728.60

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Solution

The fourth proportional to 122,947.80, 184,421.70 and 109,728.60 is: 164,592.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,947.80 : 184,421.70 = 109,728.60 : x
  2. Step 2: Convert to fraction form
    122,947.80/184,421.70 = 109,728.60/x
  3. Step 3: Cross multiply
    122,947.80x = 184,421.70 × 109,728.60
  4. Step 4: Simplify right side
    122,947.80x = 20,236,334,950.62
  5. Step 5: Solve for x
    x = 20,236,334,950.62/122,947.80
  6. Step 6: Final answer
    x = 164,592.90

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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.