Home / 199,316.10-298,974.15-128,813.70

Finding the Fourth Proportional to 199,316.10, 298,974.15 and 128,813.70

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Solution

The fourth proportional to 199,316.10, 298,974.15 and 128,813.70 is: 193,220.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,316.10 : 298,974.15 = 128,813.70 : x
  2. Step 2: Convert to fraction form
    199,316.10/298,974.15 = 128,813.70/x
  3. Step 3: Cross multiply
    199,316.10x = 298,974.15 × 128,813.70
  4. Step 4: Simplify right side
    199,316.10x = 38,511,966,465.86
  5. Step 5: Solve for x
    x = 38,511,966,465.86/199,316.10
  6. Step 6: Final answer
    x = 193,220.55

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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.