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Finding the Fourth Proportional to 239,586.66, 359,412.39 and 81,772.74

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Solution

The fourth proportional to 239,586.66, 359,412.39 and 81,772.74 is: 122,670.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,586.66 : 359,412.39 = 81,772.74 : x
  2. Step 2: Convert to fraction form
    239,586.66/359,412.39 = 81,772.74/x
  3. Step 3: Cross multiply
    239,586.66x = 359,412.39 × 81,772.74
  4. Step 4: Simplify right side
    239,586.66x = 29,390,135,920.25
  5. Step 5: Solve for x
    x = 29,390,135,920.25/239,586.66
  6. Step 6: Final answer
    x = 122,670.17

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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.