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Finding the Fourth Proportional to 109,292.52, 150,835.05 and 66,879.30

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Solution

The fourth proportional to 109,292.52, 150,835.05 and 66,879.30 is: 92,300.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,292.52 : 150,835.05 = 66,879.30 : x
  2. Step 2: Convert to fraction form
    109,292.52/150,835.05 = 66,879.30/x
  3. Step 3: Cross multiply
    109,292.52x = 150,835.05 × 66,879.30
  4. Step 4: Simplify right side
    109,292.52x = 10,087,742,559.47
  5. Step 5: Solve for x
    x = 10,087,742,559.47/109,292.52
  6. Step 6: Final answer
    x = 92,300.39

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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.