Home / 128,086.76-192,139.36-49,200.98

Finding the Fourth Proportional to 128,086.76, 192,139.36 and 49,200.98

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Solution

The fourth proportional to 128,086.76, 192,139.36 and 49,200.98 is: 73,805.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,086.76 : 192,139.36 = 49,200.98 : x
  2. Step 2: Convert to fraction form
    128,086.76/192,139.36 = 49,200.98/x
  3. Step 3: Cross multiply
    128,086.76x = 192,139.36 × 49,200.98
  4. Step 4: Simplify right side
    128,086.76x = 9,453,444,808.57
  5. Step 5: Solve for x
    x = 9,453,444,808.57/128,086.76
  6. Step 6: Final answer
    x = 73,805.01

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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.