Home / 141,231.30-212,610.48-128,661.84

Finding the Fourth Proportional to 141,231.30, 212,610.48 and 128,661.84

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Solution

The fourth proportional to 141,231.30, 212,610.48 and 128,661.84 is: 193,688.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,231.30 : 212,610.48 = 128,661.84 : x
  2. Step 2: Convert to fraction form
    141,231.30/212,610.48 = 128,661.84/x
  3. Step 3: Cross multiply
    141,231.30x = 212,610.48 × 128,661.84
  4. Step 4: Simplify right side
    141,231.30x = 27,354,855,560.08
  5. Step 5: Solve for x
    x = 27,354,855,560.08/141,231.30
  6. Step 6: Final answer
    x = 193,688.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.