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Finding the Fourth Proportional to 128,597.66, 177,551.41 and 80,273.16

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Solution

The fourth proportional to 128,597.66, 177,551.41 and 80,273.16 is: 110,831.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,597.66 : 177,551.41 = 80,273.16 : x
  2. Step 2: Convert to fraction form
    128,597.66/177,551.41 = 80,273.16/x
  3. Step 3: Cross multiply
    128,597.66x = 177,551.41 × 80,273.16
  4. Step 4: Simplify right side
    128,597.66x = 14,252,612,743.16
  5. Step 5: Solve for x
    x = 14,252,612,743.16/128,597.66
  6. Step 6: Final answer
    x = 110,831.04

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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.