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Finding the Fourth Proportional to 107,393.45, 148,251.87 and 67,130.78

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Solution

The fourth proportional to 107,393.45, 148,251.87 and 67,130.78 is: 92,671.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,393.45 : 148,251.87 = 67,130.78 : x
  2. Step 2: Convert to fraction form
    107,393.45/148,251.87 = 67,130.78/x
  3. Step 3: Cross multiply
    107,393.45x = 148,251.87 × 67,130.78
  4. Step 4: Simplify right side
    107,393.45x = 9,952,262,928.30
  5. Step 5: Solve for x
    x = 9,952,262,928.30/107,393.45
  6. Step 6: Final answer
    x = 92,671.05

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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.