Home / 205,042.70-307,564.05-120,716.30

Finding the Fourth Proportional to 205,042.70, 307,564.05 and 120,716.30

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Solution

The fourth proportional to 205,042.70, 307,564.05 and 120,716.30 is: 181,074.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,042.70 : 307,564.05 = 120,716.30 : x
  2. Step 2: Convert to fraction form
    205,042.70/307,564.05 = 120,716.30/x
  3. Step 3: Cross multiply
    205,042.70x = 307,564.05 × 120,716.30
  4. Step 4: Simplify right side
    205,042.70x = 37,127,994,129.02
  5. Step 5: Solve for x
    x = 37,127,994,129.02/205,042.70
  6. Step 6: Final answer
    x = 181,074.45

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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.