Home / 198,925.63-298,279.40-78,860.95

Finding the Fourth Proportional to 198,925.63, 298,279.40 and 78,860.95

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Solution

The fourth proportional to 198,925.63, 298,279.40 and 78,860.95 is: 118,248.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,925.63 : 298,279.40 = 78,860.95 : x
  2. Step 2: Convert to fraction form
    198,925.63/298,279.40 = 78,860.95/x
  3. Step 3: Cross multiply
    198,925.63x = 298,279.40 × 78,860.95
  4. Step 4: Simplify right side
    198,925.63x = 23,522,597,830.84
  5. Step 5: Solve for x
    x = 23,522,597,830.84/198,925.63
  6. Step 6: Final answer
    x = 118,248.20

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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.