Home / 128,426.20-177,150.67-84,819.02

Finding the Fourth Proportional to 128,426.20, 177,150.67 and 84,819.02

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Solution

The fourth proportional to 128,426.20, 177,150.67 and 84,819.02 is: 116,999.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,426.20 : 177,150.67 = 84,819.02 : x
  2. Step 2: Convert to fraction form
    128,426.20/177,150.67 = 84,819.02/x
  3. Step 3: Cross multiply
    128,426.20x = 177,150.67 × 84,819.02
  4. Step 4: Simplify right side
    128,426.20x = 15,025,744,911.90
  5. Step 5: Solve for x
    x = 15,025,744,911.90/128,426.20
  6. Step 6: Final answer
    x = 116,999.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.