Home / 210,939.15-291,081.42-120,298.95

Finding the Fourth Proportional to 210,939.15, 291,081.42 and 120,298.95

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Solution

The fourth proportional to 210,939.15, 291,081.42 and 120,298.95 is: 166,004.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,939.15 : 291,081.42 = 120,298.95 : x
  2. Step 2: Convert to fraction form
    210,939.15/291,081.42 = 120,298.95/x
  3. Step 3: Cross multiply
    210,939.15x = 291,081.42 × 120,298.95
  4. Step 4: Simplify right side
    210,939.15x = 35,016,789,190.51
  5. Step 5: Solve for x
    x = 35,016,789,190.51/210,939.15
  6. Step 6: Final answer
    x = 166,004.22

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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.