Home / 112,696.88-155,524.08-61,711.76

Finding the Fourth Proportional to 112,696.88, 155,524.08 and 61,711.76

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Solution

The fourth proportional to 112,696.88, 155,524.08 and 61,711.76 is: 85,163.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,696.88 : 155,524.08 = 61,711.76 : x
  2. Step 2: Convert to fraction form
    112,696.88/155,524.08 = 61,711.76/x
  3. Step 3: Cross multiply
    112,696.88x = 155,524.08 × 61,711.76
  4. Step 4: Simplify right side
    112,696.88x = 9,597,664,699.18
  5. Step 5: Solve for x
    x = 9,597,664,699.18/112,696.88
  6. Step 6: Final answer
    x = 85,163.54

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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.