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Finding the Fourth Proportional to 159,384.41, 219,941.88 and 91,404.25

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Solution

The fourth proportional to 159,384.41, 219,941.88 and 91,404.25 is: 126,132.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,384.41 : 219,941.88 = 91,404.25 : x
  2. Step 2: Convert to fraction form
    159,384.41/219,941.88 = 91,404.25/x
  3. Step 3: Cross multiply
    159,384.41x = 219,941.88 × 91,404.25
  4. Step 4: Simplify right side
    159,384.41x = 20,103,622,206.52
  5. Step 5: Solve for x
    x = 20,103,622,206.52/159,384.41
  6. Step 6: Final answer
    x = 126,132.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.