Home / 235,581.39-325,107.59-128,157.21

Finding the Fourth Proportional to 235,581.39, 325,107.59 and 128,157.21

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Solution

The fourth proportional to 235,581.39, 325,107.59 and 128,157.21 is: 176,859.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,581.39 : 325,107.59 = 128,157.21 : x
  2. Step 2: Convert to fraction form
    235,581.39/325,107.59 = 128,157.21/x
  3. Step 3: Cross multiply
    235,581.39x = 325,107.59 × 128,157.21
  4. Step 4: Simplify right side
    235,581.39x = 41,664,881,043.44
  5. Step 5: Solve for x
    x = 41,664,881,043.44/235,581.39
  6. Step 6: Final answer
    x = 176,859.81

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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.