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Finding the Fourth Proportional to 154,614.80, 231,922.20 and 70,415.30

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Solution

The fourth proportional to 154,614.80, 231,922.20 and 70,415.30 is: 105,622.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,614.80 : 231,922.20 = 70,415.30 : x
  2. Step 2: Convert to fraction form
    154,614.80/231,922.20 = 70,415.30/x
  3. Step 3: Cross multiply
    154,614.80x = 231,922.20 × 70,415.30
  4. Step 4: Simplify right side
    154,614.80x = 16,330,871,289.66
  5. Step 5: Solve for x
    x = 16,330,871,289.66/154,614.80
  6. Step 6: Final answer
    x = 105,622.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.