Home / 128,269.20-177,007.44-90,084.24

Finding the Fourth Proportional to 128,269.20, 177,007.44 and 90,084.24

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Solution

The fourth proportional to 128,269.20, 177,007.44 and 90,084.24 is: 124,313.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,269.20 : 177,007.44 = 90,084.24 : x
  2. Step 2: Convert to fraction form
    128,269.20/177,007.44 = 90,084.24/x
  3. Step 3: Cross multiply
    128,269.20x = 177,007.44 × 90,084.24
  4. Step 4: Simplify right side
    128,269.20x = 15,945,580,706.75
  5. Step 5: Solve for x
    x = 15,945,580,706.75/128,269.20
  6. Step 6: Final answer
    x = 124,313.40

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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.