Home / 205,111.80-307,667.70-86,752.44

Finding the Fourth Proportional to 205,111.80, 307,667.70 and 86,752.44

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Solution

The fourth proportional to 205,111.80, 307,667.70 and 86,752.44 is: 130,128.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,111.80 : 307,667.70 = 86,752.44 : x
  2. Step 2: Convert to fraction form
    205,111.80/307,667.70 = 86,752.44/x
  3. Step 3: Cross multiply
    205,111.80x = 307,667.70 × 86,752.44
  4. Step 4: Simplify right side
    205,111.80x = 26,690,923,684.19
  5. Step 5: Solve for x
    x = 26,690,923,684.19/205,111.80
  6. Step 6: Final answer
    x = 130,128.66

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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.