Home / 204,947.70-307,421.55-120,621.30

Finding the Fourth Proportional to 204,947.70, 307,421.55 and 120,621.30

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Solution

The fourth proportional to 204,947.70, 307,421.55 and 120,621.30 is: 180,931.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,947.70 : 307,421.55 = 120,621.30 : x
  2. Step 2: Convert to fraction form
    204,947.70/307,421.55 = 120,621.30/x
  3. Step 3: Cross multiply
    204,947.70x = 307,421.55 × 120,621.30
  4. Step 4: Simplify right side
    204,947.70x = 37,081,587,009.02
  5. Step 5: Solve for x
    x = 37,081,587,009.02/204,947.70
  6. Step 6: Final answer
    x = 180,931.95

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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.