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Finding the Fourth Proportional to 186,658.88, 279,829.44 and 81,399.36

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Solution

The fourth proportional to 186,658.88, 279,829.44 and 81,399.36 is: 122,029.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,658.88 : 279,829.44 = 81,399.36 : x
  2. Step 2: Convert to fraction form
    186,658.88/279,829.44 = 81,399.36/x
  3. Step 3: Cross multiply
    186,658.88x = 279,829.44 × 81,399.36
  4. Step 4: Simplify right side
    186,658.88x = 22,777,937,325.16
  5. Step 5: Solve for x
    x = 22,777,937,325.16/186,658.88
  6. Step 6: Final answer
    x = 122,029.75

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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.