Home / 198,701.16-298,071.18-72,375.72

Finding the Fourth Proportional to 198,701.16, 298,071.18 and 72,375.72

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Solution

The fourth proportional to 198,701.16, 298,071.18 and 72,375.72 is: 108,570.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,701.16 : 298,071.18 = 72,375.72 : x
  2. Step 2: Convert to fraction form
    198,701.16/298,071.18 = 72,375.72/x
  3. Step 3: Cross multiply
    198,701.16x = 298,071.18 × 72,375.72
  4. Step 4: Simplify right side
    198,701.16x = 21,573,116,263.75
  5. Step 5: Solve for x
    x = 21,573,116,263.75/198,701.16
  6. Step 6: Final answer
    x = 108,570.66

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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.