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Finding the Fourth Proportional to 122,947.80, 184,421.70 and 60,610.20

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Solution

The fourth proportional to 122,947.80, 184,421.70 and 60,610.20 is: 90,915.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,947.80 : 184,421.70 = 60,610.20 : x
  2. Step 2: Convert to fraction form
    122,947.80/184,421.70 = 60,610.20/x
  3. Step 3: Cross multiply
    122,947.80x = 184,421.70 × 60,610.20
  4. Step 4: Simplify right side
    122,947.80x = 11,177,836,121.34
  5. Step 5: Solve for x
    x = 11,177,836,121.34/122,947.80
  6. Step 6: Final answer
    x = 90,915.30

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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.