Home / 198,047.40-297,120.86-91,506.75

Finding the Fourth Proportional to 198,047.40, 297,120.86 and 91,506.75

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Solution

The fourth proportional to 198,047.40, 297,120.86 and 91,506.75 is: 137,283.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,047.40 : 297,120.86 = 91,506.75 : x
  2. Step 2: Convert to fraction form
    198,047.40/297,120.86 = 91,506.75/x
  3. Step 3: Cross multiply
    198,047.40x = 297,120.86 × 91,506.75
  4. Step 4: Simplify right side
    198,047.40x = 27,188,564,255.81
  5. Step 5: Solve for x
    x = 27,188,564,255.81/198,047.40
  6. Step 6: Final answer
    x = 137,283.12

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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.