Home / 111,351.15-153,458.49-79,087.17

Finding the Fourth Proportional to 111,351.15, 153,458.49 and 79,087.17

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Solution

The fourth proportional to 111,351.15, 153,458.49 and 79,087.17 is: 108,993.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,351.15 : 153,458.49 = 79,087.17 : x
  2. Step 2: Convert to fraction form
    111,351.15/153,458.49 = 79,087.17/x
  3. Step 3: Cross multiply
    111,351.15x = 153,458.49 × 79,087.17
  4. Step 4: Simplify right side
    111,351.15x = 12,136,597,686.57
  5. Step 5: Solve for x
    x = 12,136,597,686.57/111,351.15
  6. Step 6: Final answer
    x = 108,993.91

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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.