Home / 205,054.48-307,149.36-130,135.12

Finding the Fourth Proportional to 205,054.48, 307,149.36 and 130,135.12

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Solution

The fourth proportional to 205,054.48, 307,149.36 and 130,135.12 is: 194,928.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,054.48 : 307,149.36 = 130,135.12 : x
  2. Step 2: Convert to fraction form
    205,054.48/307,149.36 = 130,135.12/x
  3. Step 3: Cross multiply
    205,054.48x = 307,149.36 × 130,135.12
  4. Step 4: Simplify right side
    205,054.48x = 39,970,918,821.52
  5. Step 5: Solve for x
    x = 39,970,918,821.52/205,054.48
  6. Step 6: Final answer
    x = 194,928.29

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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.