Home / 213,021.46-293,987.16-121,169.51

Finding the Fourth Proportional to 213,021.46, 293,987.16 and 121,169.51

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Solution

The fourth proportional to 213,021.46, 293,987.16 and 121,169.51 is: 167,223.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,021.46 : 293,987.16 = 121,169.51 : x
  2. Step 2: Convert to fraction form
    213,021.46/293,987.16 = 121,169.51/x
  3. Step 3: Cross multiply
    213,021.46x = 293,987.16 × 121,169.51
  4. Step 4: Simplify right side
    213,021.46x = 35,622,280,485.78
  5. Step 5: Solve for x
    x = 35,622,280,485.78/213,021.46
  6. Step 6: Final answer
    x = 167,223.91

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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.