Home / 221,145.56-331,521.93-86,178.36

Finding the Fourth Proportional to 221,145.56, 331,521.93 and 86,178.36

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Solution

The fourth proportional to 221,145.56, 331,521.93 and 86,178.36 is: 129,191.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,145.56 : 331,521.93 = 86,178.36 : x
  2. Step 2: Convert to fraction form
    221,145.56/331,521.93 = 86,178.36/x
  3. Step 3: Cross multiply
    221,145.56x = 331,521.93 × 86,178.36
  4. Step 4: Simplify right side
    221,145.56x = 28,570,016,231.43
  5. Step 5: Solve for x
    x = 28,570,016,231.43/221,145.56
  6. Step 6: Final answer
    x = 129,191.00

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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.