Home / 198,685.40-274,177.50-112,650.17

Finding the Fourth Proportional to 198,685.40, 274,177.50 and 112,650.17

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Solution

The fourth proportional to 198,685.40, 274,177.50 and 112,650.17 is: 155,452.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,685.40 : 274,177.50 = 112,650.17 : x
  2. Step 2: Convert to fraction form
    198,685.40/274,177.50 = 112,650.17/x
  3. Step 3: Cross multiply
    198,685.40x = 274,177.50 × 112,650.17
  4. Step 4: Simplify right side
    198,685.40x = 30,886,141,985.18
  5. Step 5: Solve for x
    x = 30,886,141,985.18/198,685.40
  6. Step 6: Final answer
    x = 155,452.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.