Home / 199,318.10-298,977.15-128,815.70

Finding the Fourth Proportional to 199,318.10, 298,977.15 and 128,815.70

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Solution

The fourth proportional to 199,318.10, 298,977.15 and 128,815.70 is: 193,223.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,318.10 : 298,977.15 = 128,815.70 : x
  2. Step 2: Convert to fraction form
    199,318.10/298,977.15 = 128,815.70/x
  3. Step 3: Cross multiply
    199,318.10x = 298,977.15 × 128,815.70
  4. Step 4: Simplify right side
    199,318.10x = 38,512,950,861.26
  5. Step 5: Solve for x
    x = 38,512,950,861.26/199,318.10
  6. Step 6: Final answer
    x = 193,223.55

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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.