Home / 136,628.20-204,723.60-89,826.40

Finding the Fourth Proportional to 136,628.20, 204,723.60 and 89,826.40

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Solution

The fourth proportional to 136,628.20, 204,723.60 and 89,826.40 is: 134,595.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,628.20 : 204,723.60 = 89,826.40 : x
  2. Step 2: Convert to fraction form
    136,628.20/204,723.60 = 89,826.40/x
  3. Step 3: Cross multiply
    136,628.20x = 204,723.60 × 89,826.40
  4. Step 4: Simplify right side
    136,628.20x = 18,389,583,983.04
  5. Step 5: Solve for x
    x = 18,389,583,983.04/136,628.20
  6. Step 6: Final answer
    x = 134,595.82

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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.