Home / 198,960.08-298,461.45-85,119.71

Finding the Fourth Proportional to 198,960.08, 298,461.45 and 85,119.71

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Solution

The fourth proportional to 198,960.08, 298,461.45 and 85,119.71 is: 127,688.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,960.08 : 298,461.45 = 85,119.71 : x
  2. Step 2: Convert to fraction form
    198,960.08/298,461.45 = 85,119.71/x
  3. Step 3: Cross multiply
    198,960.08x = 298,461.45 × 85,119.71
  4. Step 4: Simplify right side
    198,960.08x = 25,404,952,070.18
  5. Step 5: Solve for x
    x = 25,404,952,070.18/198,960.08
  6. Step 6: Final answer
    x = 127,688.69

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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.