Home / 198,638.50-274,115.37-112,605.47

Finding the Fourth Proportional to 198,638.50, 274,115.37 and 112,605.47

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Solution

The fourth proportional to 198,638.50, 274,115.37 and 112,605.47 is: 155,392.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,638.50 : 274,115.37 = 112,605.47 : x
  2. Step 2: Convert to fraction form
    198,638.50/274,115.37 = 112,605.47/x
  3. Step 3: Cross multiply
    198,638.50x = 274,115.37 × 112,605.47
  4. Step 4: Simplify right side
    198,638.50x = 30,866,890,073.07
  5. Step 5: Solve for x
    x = 30,866,890,073.07/198,638.50
  6. Step 6: Final answer
    x = 155,392.28

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1.5x scale

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.