Home / 171,919.93-257,935.94-86,486.70

Finding the Fourth Proportional to 171,919.93, 257,935.94 and 86,486.70

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Solution

The fourth proportional to 171,919.93, 257,935.94 and 86,486.70 is: 129,758.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,919.93 : 257,935.94 = 86,486.70 : x
  2. Step 2: Convert to fraction form
    171,919.93/257,935.94 = 86,486.70/x
  3. Step 3: Cross multiply
    171,919.93x = 257,935.94 × 86,486.70
  4. Step 4: Simplify right side
    171,919.93x = 22,308,028,262.00
  5. Step 5: Solve for x
    x = 22,308,028,262.00/171,919.93
  6. Step 6: Final answer
    x = 129,758.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.