Home / 128,759.76-193,086.18-49,828.50

Finding the Fourth Proportional to 128,759.76, 193,086.18 and 49,828.50

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Solution

The fourth proportional to 128,759.76, 193,086.18 and 49,828.50 is: 74,722.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,759.76 : 193,086.18 = 49,828.50 : x
  2. Step 2: Convert to fraction form
    128,759.76/193,086.18 = 49,828.50/x
  3. Step 3: Cross multiply
    128,759.76x = 193,086.18 × 49,828.50
  4. Step 4: Simplify right side
    128,759.76x = 9,621,194,720.13
  5. Step 5: Solve for x
    x = 9,621,194,720.13/128,759.76
  6. Step 6: Final answer
    x = 74,722.06

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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.