Home / 198,695.16-298,062.18-72,369.72

Finding the Fourth Proportional to 198,695.16, 298,062.18 and 72,369.72

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Solution

The fourth proportional to 198,695.16, 298,062.18 and 72,369.72 is: 108,561.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,695.16 : 298,062.18 = 72,369.72 : x
  2. Step 2: Convert to fraction form
    198,695.16/298,062.18 = 72,369.72/x
  3. Step 3: Cross multiply
    198,695.16x = 298,062.18 × 72,369.72
  4. Step 4: Simplify right side
    198,695.16x = 21,570,676,509.19
  5. Step 5: Solve for x
    x = 21,570,676,509.19/198,695.16
  6. Step 6: Final answer
    x = 108,561.66

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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.