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Finding the Fourth Proportional to 123,422.70, 185,220.45 and 53,352.30

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Solution

The fourth proportional to 123,422.70, 185,220.45 and 53,352.30 is: 80,065.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,422.70 : 185,220.45 = 53,352.30 : x
  2. Step 2: Convert to fraction form
    123,422.70/185,220.45 = 53,352.30/x
  3. Step 3: Cross multiply
    123,422.70x = 185,220.45 × 53,352.30
  4. Step 4: Simplify right side
    123,422.70x = 9,881,937,014.54
  5. Step 5: Solve for x
    x = 9,881,937,014.54/123,422.70
  6. Step 6: Final answer
    x = 80,065.80

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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.