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Finding the Fourth Proportional to 101,721.60, 140,349.99 and 59,256.12

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Solution

The fourth proportional to 101,721.60, 140,349.99 and 59,256.12 is: 81,758.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,721.60 : 140,349.99 = 59,256.12 : x
  2. Step 2: Convert to fraction form
    101,721.60/140,349.99 = 59,256.12/x
  3. Step 3: Cross multiply
    101,721.60x = 140,349.99 × 59,256.12
  4. Step 4: Simplify right side
    101,721.60x = 8,316,595,849.44
  5. Step 5: Solve for x
    x = 8,316,595,849.44/101,721.60
  6. Step 6: Final answer
    x = 81,758.41

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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.