Home / 203,686.25-305,545.77-77,387.00

Finding the Fourth Proportional to 203,686.25, 305,545.77 and 77,387.00

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Solution

The fourth proportional to 203,686.25, 305,545.77 and 77,387.00 is: 116,086.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,686.25 : 305,545.77 = 77,387.00 : x
  2. Step 2: Convert to fraction form
    203,686.25/305,545.77 = 77,387.00/x
  3. Step 3: Cross multiply
    203,686.25x = 305,545.77 × 77,387.00
  4. Step 4: Simplify right side
    203,686.25x = 23,645,268,975.26
  5. Step 5: Solve for x
    x = 23,645,268,975.26/203,686.25
  6. Step 6: Final answer
    x = 116,086.72

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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.