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Finding the Fourth Proportional to 155,747.50, 233,650.44 and 72,641.50

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Solution

The fourth proportional to 155,747.50, 233,650.44 and 72,641.50 is: 108,975.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,747.50 : 233,650.44 = 72,641.50 : x
  2. Step 2: Convert to fraction form
    155,747.50/233,650.44 = 72,641.50/x
  3. Step 3: Cross multiply
    155,747.50x = 233,650.44 × 72,641.50
  4. Step 4: Simplify right side
    155,747.50x = 16,972,718,437.26
  5. Step 5: Solve for x
    x = 16,972,718,437.26/155,747.50
  6. Step 6: Final answer
    x = 108,975.86

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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.