Home / 128,212.36-176,914.32-80,481.08

Finding the Fourth Proportional to 128,212.36, 176,914.32 and 80,481.08

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Solution

The fourth proportional to 128,212.36, 176,914.32 and 80,481.08 is: 111,052.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,212.36 : 176,914.32 = 80,481.08 : x
  2. Step 2: Convert to fraction form
    128,212.36/176,914.32 = 80,481.08/x
  3. Step 3: Cross multiply
    128,212.36x = 176,914.32 × 80,481.08
  4. Step 4: Simplify right side
    128,212.36x = 14,238,255,541.07
  5. Step 5: Solve for x
    x = 14,238,255,541.07/128,212.36
  6. Step 6: Final answer
    x = 111,052.13

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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.