Home / 113,172.30-156,177-62,185.57

Finding the Fourth Proportional to 113,172.30, 156,177 and 62,185.57

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Solution

The fourth proportional to 113,172.30, 156,177 and 62,185.57 is: 85,815.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,172.30 : 156,177 = 62,185.57 : x
  2. Step 2: Convert to fraction form
    113,172.30/156,177 = 62,185.57/x
  3. Step 3: Cross multiply
    113,172.30x = 156,177 × 62,185.57
  4. Step 4: Simplify right side
    113,172.30x = 9,711,955,375.45
  5. Step 5: Solve for x
    x = 9,711,955,375.45/113,172.30
  6. Step 6: Final answer
    x = 85,815.66

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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.