Home / 236,123.79-325,841.31-128,691.51

Finding the Fourth Proportional to 236,123.79, 325,841.31 and 128,691.51

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Solution

The fourth proportional to 236,123.79, 325,841.31 and 128,691.51 is: 177,589.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,123.79 : 325,841.31 = 128,691.51 : x
  2. Step 2: Convert to fraction form
    236,123.79/325,841.31 = 128,691.51/x
  3. Step 3: Cross multiply
    236,123.79x = 325,841.31 × 128,691.51
  4. Step 4: Simplify right side
    236,123.79x = 41,933,010,204.28
  5. Step 5: Solve for x
    x = 41,933,010,204.28/236,123.79
  6. Step 6: Final answer
    x = 177,589.10

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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.