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Finding the Fourth Proportional to 133,315.50, 199,980.54 and 39,828.54

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Solution

The fourth proportional to 133,315.50, 199,980.54 and 39,828.54 is: 59,744.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,315.50 : 199,980.54 = 39,828.54 : x
  2. Step 2: Convert to fraction form
    133,315.50/199,980.54 = 39,828.54/x
  3. Step 3: Cross multiply
    133,315.50x = 199,980.54 × 39,828.54
  4. Step 4: Simplify right side
    133,315.50x = 7,964,932,936.61
  5. Step 5: Solve for x
    x = 7,964,932,936.61/133,315.50
  6. Step 6: Final answer
    x = 59,744.99

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1.5x scale

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.