Home / 154,005.50-231,100.41-66,453.50

Finding the Fourth Proportional to 154,005.50, 231,100.41 and 66,453.50

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Solution

The fourth proportional to 154,005.50, 231,100.41 and 66,453.50 is: 99,720.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,005.50 : 231,100.41 = 66,453.50 : x
  2. Step 2: Convert to fraction form
    154,005.50/231,100.41 = 66,453.50/x
  3. Step 3: Cross multiply
    154,005.50x = 231,100.41 × 66,453.50
  4. Step 4: Simplify right side
    154,005.50x = 15,357,431,095.94
  5. Step 5: Solve for x
    x = 15,357,431,095.94/154,005.50
  6. Step 6: Final answer
    x = 99,720.02

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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.