Home / 157,928.19-217,940.42-86,308.21

Finding the Fourth Proportional to 157,928.19, 217,940.42 and 86,308.21

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Solution

The fourth proportional to 157,928.19, 217,940.42 and 86,308.21 is: 119,105.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,928.19 : 217,940.42 = 86,308.21 : x
  2. Step 2: Convert to fraction form
    157,928.19/217,940.42 = 86,308.21/x
  3. Step 3: Cross multiply
    157,928.19x = 217,940.42 × 86,308.21
  4. Step 4: Simplify right side
    157,928.19x = 18,810,046,865.92
  5. Step 5: Solve for x
    x = 18,810,046,865.92/157,928.19
  6. Step 6: Final answer
    x = 119,105.06

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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.