Home / 158,198.08-218,392.32-91,117.12

Finding the Fourth Proportional to 158,198.08, 218,392.32 and 91,117.12

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Solution

The fourth proportional to 158,198.08, 218,392.32 and 91,117.12 is: 125,787.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,198.08 : 218,392.32 = 91,117.12 : x
  2. Step 2: Convert to fraction form
    158,198.08/218,392.32 = 91,117.12/x
  3. Step 3: Cross multiply
    158,198.08x = 218,392.32 × 91,117.12
  4. Step 4: Simplify right side
    158,198.08x = 19,899,279,228.52
  5. Step 5: Solve for x
    x = 19,899,279,228.52/158,198.08
  6. Step 6: Final answer
    x = 125,787.11

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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.