Home / 99,686.77-137,589.09-57,268.69

Finding the Fourth Proportional to 99,686.77, 137,589.09 and 57,268.69

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Solution

The fourth proportional to 99,686.77, 137,589.09 and 57,268.69 is: 79,043.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,686.77 : 137,589.09 = 57,268.69 : x
  2. Step 2: Convert to fraction form
    99,686.77/137,589.09 = 57,268.69/x
  3. Step 3: Cross multiply
    99,686.77x = 137,589.09 × 57,268.69
  4. Step 4: Simplify right side
    99,686.77x = 7,879,546,942.59
  5. Step 5: Solve for x
    x = 7,879,546,942.59/99,686.77
  6. Step 6: Final answer
    x = 79,043.06

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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.