Home / 154,439.40-231,464.70-136,943.40

Finding the Fourth Proportional to 154,439.40, 231,464.70 and 136,943.40

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Solution

The fourth proportional to 154,439.40, 231,464.70 and 136,943.40 is: 205,242.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,439.40 : 231,464.70 = 136,943.40 : x
  2. Step 2: Convert to fraction form
    154,439.40/231,464.70 = 136,943.40/x
  3. Step 3: Cross multiply
    154,439.40x = 231,464.70 × 136,943.40
  4. Step 4: Simplify right side
    154,439.40x = 31,697,562,997.98
  5. Step 5: Solve for x
    x = 31,697,562,997.98/154,439.40
  6. Step 6: Final answer
    x = 205,242.72

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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.