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Finding the Fourth Proportional to 140,437.53, 210,708.88 and 72,927.41

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Solution

The fourth proportional to 140,437.53, 210,708.88 and 72,927.41 is: 109,418.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,437.53 : 210,708.88 = 72,927.41 : x
  2. Step 2: Convert to fraction form
    140,437.53/210,708.88 = 72,927.41/x
  3. Step 3: Cross multiply
    140,437.53x = 210,708.88 × 72,927.41
  4. Step 4: Simplify right side
    140,437.53x = 15,366,451,646.54
  5. Step 5: Solve for x
    x = 15,366,451,646.54/140,437.53
  6. Step 6: Final answer
    x = 109,418.41

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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.