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Finding the Fourth Proportional to 100,872.54, 139,197.69 and 60,588

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Solution

The fourth proportional to 100,872.54, 139,197.69 and 60,588 is: 83,607.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,872.54 : 139,197.69 = 60,588 : x
  2. Step 2: Convert to fraction form
    100,872.54/139,197.69 = 60,588/x
  3. Step 3: Cross multiply
    100,872.54x = 139,197.69 × 60,588
  4. Step 4: Simplify right side
    100,872.54x = 8,433,709,641.72
  5. Step 5: Solve for x
    x = 8,433,709,641.72/100,872.54
  6. Step 6: Final answer
    x = 83,607.59

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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.