Home / 159,479.28-220,073.52-87,857.40

Finding the Fourth Proportional to 159,479.28, 220,073.52 and 87,857.40

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Solution

The fourth proportional to 159,479.28, 220,073.52 and 87,857.40 is: 121,238.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,479.28 : 220,073.52 = 87,857.40 : x
  2. Step 2: Convert to fraction form
    159,479.28/220,073.52 = 87,857.40/x
  3. Step 3: Cross multiply
    159,479.28x = 220,073.52 × 87,857.40
  4. Step 4: Simplify right side
    159,479.28x = 19,335,087,276.05
  5. Step 5: Solve for x
    x = 19,335,087,276.05/159,479.28
  6. Step 6: Final answer
    x = 121,238.87

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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.