Home / 205,151.82-307,740.69-86,807.58

Finding the Fourth Proportional to 205,151.82, 307,740.69 and 86,807.58

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Solution

The fourth proportional to 205,151.82, 307,740.69 and 86,807.58 is: 130,216.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,151.82 : 307,740.69 = 86,807.58 : x
  2. Step 2: Convert to fraction form
    205,151.82/307,740.69 = 86,807.58/x
  3. Step 3: Cross multiply
    205,151.82x = 307,740.69 × 86,807.58
  4. Step 4: Simplify right side
    205,151.82x = 26,714,224,566.43
  5. Step 5: Solve for x
    x = 26,714,224,566.43/205,151.82
  6. Step 6: Final answer
    x = 130,216.85

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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.