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Finding the Fourth Proportional to 147,450.78, 221,176.11 and 36,642.78

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Solution

The fourth proportional to 147,450.78, 221,176.11 and 36,642.78 is: 54,964.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,450.78 : 221,176.11 = 36,642.78 : x
  2. Step 2: Convert to fraction form
    147,450.78/221,176.11 = 36,642.78/x
  3. Step 3: Cross multiply
    147,450.78x = 221,176.11 × 36,642.78
  4. Step 4: Simplify right side
    147,450.78x = 8,104,507,539.99
  5. Step 5: Solve for x
    x = 8,104,507,539.99/147,450.78
  6. Step 6: Final answer
    x = 54,964.16

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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.