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Finding the Fourth Proportional to 102,620.40, 153,930.60 and 63,049.20

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Solution

The fourth proportional to 102,620.40, 153,930.60 and 63,049.20 is: 94,573.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,620.40 : 153,930.60 = 63,049.20 : x
  2. Step 2: Convert to fraction form
    102,620.40/153,930.60 = 63,049.20/x
  3. Step 3: Cross multiply
    102,620.40x = 153,930.60 × 63,049.20
  4. Step 4: Simplify right side
    102,620.40x = 9,705,201,185.52
  5. Step 5: Solve for x
    x = 9,705,201,185.52/102,620.40
  6. Step 6: Final answer
    x = 94,573.80

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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.