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Finding the Fourth Proportional to 122,981.80, 184,472.70 and 60,644.20

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Solution

The fourth proportional to 122,981.80, 184,472.70 and 60,644.20 is: 90,966.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,981.80 : 184,472.70 = 60,644.20 : x
  2. Step 2: Convert to fraction form
    122,981.80/184,472.70 = 60,644.20/x
  3. Step 3: Cross multiply
    122,981.80x = 184,472.70 × 60,644.20
  4. Step 4: Simplify right side
    122,981.80x = 11,187,199,313.34
  5. Step 5: Solve for x
    x = 11,187,199,313.34/122,981.80
  6. Step 6: Final answer
    x = 90,966.30

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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.