Home / 425,669.58-638,566.34-126,111.33

Finding the Fourth Proportional to 425,669.58, 638,566.34 and 126,111.33

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Solution

The fourth proportional to 425,669.58, 638,566.34 and 126,111.33 is: 189,185.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,669.58 : 638,566.34 = 126,111.33 : x
  2. Step 2: Convert to fraction form
    425,669.58/638,566.34 = 126,111.33/x
  3. Step 3: Cross multiply
    425,669.58x = 638,566.34 × 126,111.33
  4. Step 4: Simplify right side
    425,669.58x = 80,530,449,800.08
  5. Step 5: Solve for x
    x = 80,530,449,800.08/425,669.58
  6. Step 6: Final answer
    x = 189,185.35

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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.