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Finding the Fourth Proportional to 107,710.37, 148,543.54 and 67,427.80

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Solution

The fourth proportional to 107,710.37, 148,543.54 and 67,427.80 is: 92,989.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,710.37 : 148,543.54 = 67,427.80 : x
  2. Step 2: Convert to fraction form
    107,710.37/148,543.54 = 67,427.80/x
  3. Step 3: Cross multiply
    107,710.37x = 148,543.54 × 67,427.80
  4. Step 4: Simplify right side
    107,710.37x = 10,015,964,106.41
  5. Step 5: Solve for x
    x = 10,015,964,106.41/107,710.37
  6. Step 6: Final answer
    x = 92,989.78

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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.