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Finding the Fourth Proportional to 109,371.48, 150,946.56 and 61,636.56

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Solution

The fourth proportional to 109,371.48, 150,946.56 and 61,636.56 is: 85,066.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,371.48 : 150,946.56 = 61,636.56 : x
  2. Step 2: Convert to fraction form
    109,371.48/150,946.56 = 61,636.56/x
  3. Step 3: Cross multiply
    109,371.48x = 150,946.56 × 61,636.56
  4. Step 4: Simplify right side
    109,371.48x = 9,303,826,702.23
  5. Step 5: Solve for x
    x = 9,303,826,702.23/109,371.48
  6. Step 6: Final answer
    x = 85,066.30

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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.