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Finding the Fourth Proportional to 104,815.20, 157,222.80 and 52,327.20

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Solution

The fourth proportional to 104,815.20, 157,222.80 and 52,327.20 is: 78,490.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,815.20 : 157,222.80 = 52,327.20 : x
  2. Step 2: Convert to fraction form
    104,815.20/157,222.80 = 52,327.20/x
  3. Step 3: Cross multiply
    104,815.20x = 157,222.80 × 52,327.20
  4. Step 4: Simplify right side
    104,815.20x = 8,227,028,900.16
  5. Step 5: Solve for x
    x = 8,227,028,900.16/104,815.20
  6. Step 6: Final answer
    x = 78,490.80

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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.