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Finding the Fourth Proportional to 109,038.68, 163,295.57 and 73,871.72

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Solution

The fourth proportional to 109,038.68, 163,295.57 and 73,871.72 is: 110,629.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,038.68 : 163,295.57 = 73,871.72 : x
  2. Step 2: Convert to fraction form
    109,038.68/163,295.57 = 73,871.72/x
  3. Step 3: Cross multiply
    109,038.68x = 163,295.57 × 73,871.72
  4. Step 4: Simplify right side
    109,038.68x = 12,062,923,992.48
  5. Step 5: Solve for x
    x = 12,062,923,992.48/109,038.68
  6. Step 6: Final answer
    x = 110,629.77

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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.