Home / 151,287.40-208,758.50-87,616.36

Finding the Fourth Proportional to 151,287.40, 208,758.50 and 87,616.36

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Solution

The fourth proportional to 151,287.40, 208,758.50 and 87,616.36 is: 120,900.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,287.40 : 208,758.50 = 87,616.36 : x
  2. Step 2: Convert to fraction form
    151,287.40/208,758.50 = 87,616.36/x
  3. Step 3: Cross multiply
    151,287.40x = 208,758.50 × 87,616.36
  4. Step 4: Simplify right side
    151,287.40x = 18,290,659,889.06
  5. Step 5: Solve for x
    x = 18,290,659,889.06/151,287.40
  6. Step 6: Final answer
    x = 120,900.09

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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.