Home / 158,785.36-219,131.40-87,164.56

Finding the Fourth Proportional to 158,785.36, 219,131.40 and 87,164.56

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Solution

The fourth proportional to 158,785.36, 219,131.40 and 87,164.56 is: 120,291.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,785.36 : 219,131.40 = 87,164.56 : x
  2. Step 2: Convert to fraction form
    158,785.36/219,131.40 = 87,164.56/x
  3. Step 3: Cross multiply
    158,785.36x = 219,131.40 × 87,164.56
  4. Step 4: Simplify right side
    158,785.36x = 19,100,492,063.18
  5. Step 5: Solve for x
    x = 19,100,492,063.18/158,785.36
  6. Step 6: Final answer
    x = 120,291.27

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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.