Home / 185,071.75-255,399.84-100,188.81

Finding the Fourth Proportional to 185,071.75, 255,399.84 and 100,188.81

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Solution

The fourth proportional to 185,071.75, 255,399.84 and 100,188.81 is: 138,261.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,071.75 : 255,399.84 = 100,188.81 : x
  2. Step 2: Convert to fraction form
    185,071.75/255,399.84 = 100,188.81/x
  3. Step 3: Cross multiply
    185,071.75x = 255,399.84 × 100,188.81
  4. Step 4: Simplify right side
    185,071.75x = 25,588,206,043.79
  5. Step 5: Solve for x
    x = 25,588,206,043.79/185,071.75
  6. Step 6: Final answer
    x = 138,261.01

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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.