Home / 154,138.75-231,208.13-43,330.75

Finding the Fourth Proportional to 154,138.75, 231,208.13 and 43,330.75

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Solution

The fourth proportional to 154,138.75, 231,208.13 and 43,330.75 is: 64,996.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,138.75 : 231,208.13 = 43,330.75 : x
  2. Step 2: Convert to fraction form
    154,138.75/231,208.13 = 43,330.75/x
  3. Step 3: Cross multiply
    154,138.75x = 231,208.13 × 43,330.75
  4. Step 4: Simplify right side
    154,138.75x = 10,018,421,679.00
  5. Step 5: Solve for x
    x = 10,018,421,679.00/154,138.75
  6. Step 6: Final answer
    x = 64,996.13

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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.