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Finding the Fourth Proportional to 122,977.80, 184,466.70 and 60,640.20

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Solution

The fourth proportional to 122,977.80, 184,466.70 and 60,640.20 is: 90,960.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,977.80 : 184,466.70 = 60,640.20 : x
  2. Step 2: Convert to fraction form
    122,977.80/184,466.70 = 60,640.20/x
  3. Step 3: Cross multiply
    122,977.80x = 184,466.70 × 60,640.20
  4. Step 4: Simplify right side
    122,977.80x = 11,186,097,581.34
  5. Step 5: Solve for x
    x = 11,186,097,581.34/122,977.80
  6. Step 6: Final answer
    x = 90,960.30

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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.