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Finding the Fourth Proportional to 154,014.90, 231,019.11 and 70,908.90

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Solution

The fourth proportional to 154,014.90, 231,019.11 and 70,908.90 is: 106,361.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,014.90 : 231,019.11 = 70,908.90 : x
  2. Step 2: Convert to fraction form
    154,014.90/231,019.11 = 70,908.90/x
  3. Step 3: Cross multiply
    154,014.90x = 231,019.11 × 70,908.90
  4. Step 4: Simplify right side
    154,014.90x = 16,381,310,969.08
  5. Step 5: Solve for x
    x = 16,381,310,969.08/154,014.90
  6. Step 6: Final answer
    x = 106,361.86

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1.5x scale

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.