Home / 198,679.12-298,152.64-74,020.16

Finding the Fourth Proportional to 198,679.12, 298,152.64 and 74,020.16

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Solution

The fourth proportional to 198,679.12, 298,152.64 and 74,020.16 is: 111,080.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,679.12 : 298,152.64 = 74,020.16 : x
  2. Step 2: Convert to fraction form
    198,679.12/298,152.64 = 74,020.16/x
  3. Step 3: Cross multiply
    198,679.12x = 298,152.64 × 74,020.16
  4. Step 4: Simplify right side
    198,679.12x = 22,069,306,117.22
  5. Step 5: Solve for x
    x = 22,069,306,117.22/198,679.12
  6. Step 6: Final answer
    x = 111,080.15

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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.