Home / 411,115.15-616,739.21-126,739.16

Finding the Fourth Proportional to 411,115.15, 616,739.21 and 126,739.16

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Solution

The fourth proportional to 411,115.15, 616,739.21 and 126,739.16 is: 190,129.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,115.15 : 616,739.21 = 126,739.16 : x
  2. Step 2: Convert to fraction form
    411,115.15/616,739.21 = 126,739.16/x
  3. Step 3: Cross multiply
    411,115.15x = 616,739.21 × 126,739.16
  4. Step 4: Simplify right side
    411,115.15x = 78,165,009,414.46
  5. Step 5: Solve for x
    x = 78,165,009,414.46/411,115.15
  6. Step 6: Final answer
    x = 190,129.24

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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.