Home / 128,285.28-177,039.22-73,096.32

Finding the Fourth Proportional to 128,285.28, 177,039.22 and 73,096.32

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Solution

The fourth proportional to 128,285.28, 177,039.22 and 73,096.32 is: 100,876.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,285.28 : 177,039.22 = 73,096.32 : x
  2. Step 2: Convert to fraction form
    128,285.28/177,039.22 = 73,096.32/x
  3. Step 3: Cross multiply
    128,285.28x = 177,039.22 × 73,096.32
  4. Step 4: Simplify right side
    128,285.28x = 12,940,915,477.67
  5. Step 5: Solve for x
    x = 12,940,915,477.67/128,285.28
  6. Step 6: Final answer
    x = 100,876.07

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1.5x scale

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.