Home / 236,108.56-325,830.06-128,678.68

Finding the Fourth Proportional to 236,108.56, 325,830.06 and 128,678.68

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Solution

The fourth proportional to 236,108.56, 325,830.06 and 128,678.68 is: 177,576.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,108.56 : 325,830.06 = 128,678.68 : x
  2. Step 2: Convert to fraction form
    236,108.56/325,830.06 = 128,678.68/x
  3. Step 3: Cross multiply
    236,108.56x = 325,830.06 × 128,678.68
  4. Step 4: Simplify right side
    236,108.56x = 41,927,382,025.12
  5. Step 5: Solve for x
    x = 41,927,382,025.12/236,108.56
  6. Step 6: Final answer
    x = 177,576.71

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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.