Home / 159,407.20-219,983.34-87,789.70

Finding the Fourth Proportional to 159,407.20, 219,983.34 and 87,789.70

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Solution

The fourth proportional to 159,407.20, 219,983.34 and 87,789.70 is: 121,150.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,407.20 : 219,983.34 = 87,789.70 : x
  2. Step 2: Convert to fraction form
    159,407.20/219,983.34 = 87,789.70/x
  3. Step 3: Cross multiply
    159,407.20x = 219,983.34 × 87,789.70
  4. Step 4: Simplify right side
    159,407.20x = 19,312,271,423.60
  5. Step 5: Solve for x
    x = 19,312,271,423.60/159,407.20
  6. Step 6: Final answer
    x = 121,150.56

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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.