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Finding the Fourth Proportional to 187,978.17, 259,385.98 and 107,410.92

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Solution

The fourth proportional to 187,978.17, 259,385.98 and 107,410.92 is: 148,213.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,978.17 : 259,385.98 = 107,410.92 : x
  2. Step 2: Convert to fraction form
    187,978.17/259,385.98 = 107,410.92/x
  3. Step 3: Cross multiply
    187,978.17x = 259,385.98 × 107,410.92
  4. Step 4: Simplify right side
    187,978.17x = 27,860,884,912.92
  5. Step 5: Solve for x
    x = 27,860,884,912.92/187,978.17
  6. Step 6: Final answer
    x = 148,213.41

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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.