Home / 157,928.81-217,941.84-86,308.83

Finding the Fourth Proportional to 157,928.81, 217,941.84 and 86,308.83

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Solution

The fourth proportional to 157,928.81, 217,941.84 and 86,308.83 is: 119,106.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,928.81 : 217,941.84 = 86,308.83 : x
  2. Step 2: Convert to fraction form
    157,928.81/217,941.84 = 86,308.83/x
  3. Step 3: Cross multiply
    157,928.81x = 217,941.84 × 86,308.83
  4. Step 4: Simplify right side
    157,928.81x = 18,810,305,218.45
  5. Step 5: Solve for x
    x = 18,810,305,218.45/157,928.81
  6. Step 6: Final answer
    x = 119,106.23

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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.