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Finding the Fourth Proportional to 122,468.72, 183,771.12 and 66,308

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Solution

The fourth proportional to 122,468.72, 183,771.12 and 66,308 is: 99,498.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,468.72 : 183,771.12 = 66,308 : x
  2. Step 2: Convert to fraction form
    122,468.72/183,771.12 = 66,308/x
  3. Step 3: Cross multiply
    122,468.72x = 183,771.12 × 66,308
  4. Step 4: Simplify right side
    122,468.72x = 12,185,495,424.96
  5. Step 5: Solve for x
    x = 12,185,495,424.96/122,468.72
  6. Step 6: Final answer
    x = 99,498.84

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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.