Home / 147,139.20-220,579.20-87,998.40

Finding the Fourth Proportional to 147,139.20, 220,579.20 and 87,998.40

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Solution

The fourth proportional to 147,139.20, 220,579.20 and 87,998.40 is: 131,920.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,139.20 : 220,579.20 = 87,998.40 : x
  2. Step 2: Convert to fraction form
    147,139.20/220,579.20 = 87,998.40/x
  3. Step 3: Cross multiply
    147,139.20x = 220,579.20 × 87,998.40
  4. Step 4: Simplify right side
    147,139.20x = 19,410,616,673.28
  5. Step 5: Solve for x
    x = 19,410,616,673.28/147,139.20
  6. Step 6: Final answer
    x = 131,920.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.