Home / 154,381.62-231,784.94-78,531.51

Finding the Fourth Proportional to 154,381.62, 231,784.94 and 78,531.51

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Solution

The fourth proportional to 154,381.62, 231,784.94 and 78,531.51 is: 117,905.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,381.62 : 231,784.94 = 78,531.51 : x
  2. Step 2: Convert to fraction form
    154,381.62/231,784.94 = 78,531.51/x
  3. Step 3: Cross multiply
    154,381.62x = 231,784.94 × 78,531.51
  4. Step 4: Simplify right side
    154,381.62x = 18,202,421,529.79
  5. Step 5: Solve for x
    x = 18,202,421,529.79/154,381.62
  6. Step 6: Final answer
    x = 117,905.37

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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.