Home / 206,514.83-309,643.16-86,539.35

Finding the Fourth Proportional to 206,514.83, 309,643.16 and 86,539.35

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Solution

The fourth proportional to 206,514.83, 309,643.16 and 86,539.35 is: 129,754.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,514.83 : 309,643.16 = 86,539.35 : x
  2. Step 2: Convert to fraction form
    206,514.83/309,643.16 = 86,539.35/x
  3. Step 3: Cross multiply
    206,514.83x = 309,643.16 × 86,539.35
  4. Step 4: Simplify right side
    206,514.83x = 26,796,318,526.81
  5. Step 5: Solve for x
    x = 26,796,318,526.81/206,514.83
  6. Step 6: Final answer
    x = 129,754.93

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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.