Home / 158,921.28-219,313.17-86,324.84

Finding the Fourth Proportional to 158,921.28, 219,313.17 and 86,324.84

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Solution

The fourth proportional to 158,921.28, 219,313.17 and 86,324.84 is: 119,129.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,921.28 : 219,313.17 = 86,324.84 : x
  2. Step 2: Convert to fraction form
    158,921.28/219,313.17 = 86,324.84/x
  3. Step 3: Cross multiply
    158,921.28x = 219,313.17 × 86,324.84
  4. Step 4: Simplify right side
    158,921.28x = 18,932,173,213.58
  5. Step 5: Solve for x
    x = 18,932,173,213.58/158,921.28
  6. Step 6: Final answer
    x = 119,129.25

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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.