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Finding the Fourth Proportional to 122,304.60, 183,284.10 and 90,466.20

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Solution

The fourth proportional to 122,304.60, 183,284.10 and 90,466.20 is: 135,571.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,304.60 : 183,284.10 = 90,466.20 : x
  2. Step 2: Convert to fraction form
    122,304.60/183,284.10 = 90,466.20/x
  3. Step 3: Cross multiply
    122,304.60x = 183,284.10 × 90,466.20
  4. Step 4: Simplify right side
    122,304.60x = 16,581,016,047.42
  5. Step 5: Solve for x
    x = 16,581,016,047.42/122,304.60
  6. Step 6: Final answer
    x = 135,571.48

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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.