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Finding the Fourth Proportional to 123,654.40, 185,539.20 and 64,556.80

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Solution

The fourth proportional to 123,654.40, 185,539.20 and 64,556.80 is: 96,865.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,654.40 : 185,539.20 = 64,556.80 : x
  2. Step 2: Convert to fraction form
    123,654.40/185,539.20 = 64,556.80/x
  3. Step 3: Cross multiply
    123,654.40x = 185,539.20 × 64,556.80
  4. Step 4: Simplify right side
    123,654.40x = 11,977,817,026.56
  5. Step 5: Solve for x
    x = 11,977,817,026.56/123,654.40
  6. Step 6: Final answer
    x = 96,865.27

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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.