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Finding the Fourth Proportional to 206,729.40, 310,094.10 and 122,748.60

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Solution

The fourth proportional to 206,729.40, 310,094.10 and 122,748.60 is: 184,122.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,729.40 : 310,094.10 = 122,748.60 : x
  2. Step 2: Convert to fraction form
    206,729.40/310,094.10 = 122,748.60/x
  3. Step 3: Cross multiply
    206,729.40x = 310,094.10 × 122,748.60
  4. Step 4: Simplify right side
    206,729.40x = 38,063,616,643.26
  5. Step 5: Solve for x
    x = 38,063,616,643.26/206,729.40
  6. Step 6: Final answer
    x = 184,122.90

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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.