Home / 111,716.48-154,164.80-61,415.12

Finding the Fourth Proportional to 111,716.48, 154,164.80 and 61,415.12

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Solution

The fourth proportional to 111,716.48, 154,164.80 and 61,415.12 is: 84,750.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,716.48 : 154,164.80 = 61,415.12 : x
  2. Step 2: Convert to fraction form
    111,716.48/154,164.80 = 61,415.12/x
  3. Step 3: Cross multiply
    111,716.48x = 154,164.80 × 61,415.12
  4. Step 4: Simplify right side
    111,716.48x = 9,468,049,691.78
  5. Step 5: Solve for x
    x = 9,468,049,691.78/111,716.48
  6. Step 6: Final answer
    x = 84,750.70

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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.