Home / 123,246.51-170,183.91-78,004.32

Finding the Fourth Proportional to 123,246.51, 170,183.91 and 78,004.32

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Solution

The fourth proportional to 123,246.51, 170,183.91 and 78,004.32 is: 107,711.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,246.51 : 170,183.91 = 78,004.32 : x
  2. Step 2: Convert to fraction form
    123,246.51/170,183.91 = 78,004.32/x
  3. Step 3: Cross multiply
    123,246.51x = 170,183.91 × 78,004.32
  4. Step 4: Simplify right side
    123,246.51x = 13,275,080,174.49
  5. Step 5: Solve for x
    x = 13,275,080,174.49/123,246.51
  6. Step 6: Final answer
    x = 107,711.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.