Home / 198,926.63-298,280.90-78,861.95

Finding the Fourth Proportional to 198,926.63, 298,280.90 and 78,861.95

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Solution

The fourth proportional to 198,926.63, 298,280.90 and 78,861.95 is: 118,249.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,926.63 : 298,280.90 = 78,861.95 : x
  2. Step 2: Convert to fraction form
    198,926.63/298,280.90 = 78,861.95/x
  3. Step 3: Cross multiply
    198,926.63x = 298,280.90 × 78,861.95
  4. Step 4: Simplify right side
    198,926.63x = 23,523,013,421.76
  5. Step 5: Solve for x
    x = 23,523,013,421.76/198,926.63
  6. Step 6: Final answer
    x = 118,249.70

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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.