Home / 128,979.48-193,378.50-50,027.16

Finding the Fourth Proportional to 128,979.48, 193,378.50 and 50,027.16

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Solution

The fourth proportional to 128,979.48, 193,378.50 and 50,027.16 is: 75,005.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,979.48 : 193,378.50 = 50,027.16 : x
  2. Step 2: Convert to fraction form
    128,979.48/193,378.50 = 50,027.16/x
  3. Step 3: Cross multiply
    128,979.48x = 193,378.50 × 50,027.16
  4. Step 4: Simplify right side
    128,979.48x = 9,674,177,160.06
  5. Step 5: Solve for x
    x = 9,674,177,160.06/128,979.48
  6. Step 6: Final answer
    x = 75,005.55

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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.