Home / 142,310.59-196,383.14-81,900.64

Finding the Fourth Proportional to 142,310.59, 196,383.14 and 81,900.64

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Solution

The fourth proportional to 142,310.59, 196,383.14 and 81,900.64 is: 113,019.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,310.59 : 196,383.14 = 81,900.64 : x
  2. Step 2: Convert to fraction form
    142,310.59/196,383.14 = 81,900.64/x
  3. Step 3: Cross multiply
    142,310.59x = 196,383.14 × 81,900.64
  4. Step 4: Simplify right side
    142,310.59x = 16,083,904,851.21
  5. Step 5: Solve for x
    x = 16,083,904,851.21/142,310.59
  6. Step 6: Final answer
    x = 113,019.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.