Home / 205,953.20-308,992.18-86,068.34

Finding the Fourth Proportional to 205,953.20, 308,992.18 and 86,068.34

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Solution

The fourth proportional to 205,953.20, 308,992.18 and 86,068.34 is: 129,128.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,953.20 : 308,992.18 = 86,068.34 : x
  2. Step 2: Convert to fraction form
    205,953.20/308,992.18 = 86,068.34/x
  3. Step 3: Cross multiply
    205,953.20x = 308,992.18 × 86,068.34
  4. Step 4: Simplify right side
    205,953.20x = 26,594,444,005.58
  5. Step 5: Solve for x
    x = 26,594,444,005.58/205,953.20
  6. Step 6: Final answer
    x = 129,128.58

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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.