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Finding the Fourth Proportional to 122,930.88, 184,428 and 66,756.57

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Solution

The fourth proportional to 122,930.88, 184,428 and 66,756.57 is: 100,152.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,930.88 : 184,428 = 66,756.57 : x
  2. Step 2: Convert to fraction form
    122,930.88/184,428 = 66,756.57/x
  3. Step 3: Cross multiply
    122,930.88x = 184,428 × 66,756.57
  4. Step 4: Simplify right side
    122,930.88x = 12,311,780,691.96
  5. Step 5: Solve for x
    x = 12,311,780,691.96/122,930.88
  6. Step 6: Final answer
    x = 100,152.06

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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.