Home / 141,908.22-212,621.46-85,630.08

Finding the Fourth Proportional to 141,908.22, 212,621.46 and 85,630.08

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Solution

The fourth proportional to 141,908.22, 212,621.46 and 85,630.08 is: 128,299.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,908.22 : 212,621.46 = 85,630.08 : x
  2. Step 2: Convert to fraction form
    141,908.22/212,621.46 = 85,630.08/x
  3. Step 3: Cross multiply
    141,908.22x = 212,621.46 × 85,630.08
  4. Step 4: Simplify right side
    141,908.22x = 18,206,792,629.52
  5. Step 5: Solve for x
    x = 18,206,792,629.52/141,908.22
  6. Step 6: Final answer
    x = 128,299.77

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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.