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Finding the Fourth Proportional to 107,978.54, 149,008.64 and 60,230.66

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Solution

The fourth proportional to 107,978.54, 149,008.64 and 60,230.66 is: 83,117.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,978.54 : 149,008.64 = 60,230.66 : x
  2. Step 2: Convert to fraction form
    107,978.54/149,008.64 = 60,230.66/x
  3. Step 3: Cross multiply
    107,978.54x = 149,008.64 × 60,230.66
  4. Step 4: Simplify right side
    107,978.54x = 8,974,888,732.90
  5. Step 5: Solve for x
    x = 8,974,888,732.90/107,978.54
  6. Step 6: Final answer
    x = 83,117.34

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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.