Home / 198,530.28-297,663.77-72,155.52

Finding the Fourth Proportional to 198,530.28, 297,663.77 and 72,155.52

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Solution

The fourth proportional to 198,530.28, 297,663.77 and 72,155.52 is: 108,185.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,530.28 : 297,663.77 = 72,155.52 : x
  2. Step 2: Convert to fraction form
    198,530.28/297,663.77 = 72,155.52/x
  3. Step 3: Cross multiply
    198,530.28x = 297,663.77 × 72,155.52
  4. Step 4: Simplify right side
    198,530.28x = 21,478,082,440.80
  5. Step 5: Solve for x
    x = 21,478,082,440.80/198,530.28
  6. Step 6: Final answer
    x = 108,185.43

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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.