Home / 206,351.05-284,643.48-129,748.72

Finding the Fourth Proportional to 206,351.05, 284,643.48 and 129,748.72

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Solution

The fourth proportional to 206,351.05, 284,643.48 and 129,748.72 is: 178,977.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,351.05 : 284,643.48 = 129,748.72 : x
  2. Step 2: Convert to fraction form
    206,351.05/284,643.48 = 129,748.72/x
  3. Step 3: Cross multiply
    206,351.05x = 284,643.48 × 129,748.72
  4. Step 4: Simplify right side
    206,351.05x = 36,932,127,186.35
  5. Step 5: Solve for x
    x = 36,932,127,186.35/206,351.05
  6. Step 6: Final answer
    x = 178,977.17

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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.