Home / 223,015.05-307,761.06-121,040.51

Finding the Fourth Proportional to 223,015.05, 307,761.06 and 121,040.51

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Solution

The fourth proportional to 223,015.05, 307,761.06 and 121,040.51 is: 167,036.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,015.05 : 307,761.06 = 121,040.51 : x
  2. Step 2: Convert to fraction form
    223,015.05/307,761.06 = 121,040.51/x
  3. Step 3: Cross multiply
    223,015.05x = 307,761.06 × 121,040.51
  4. Step 4: Simplify right side
    223,015.05x = 37,251,554,121.74
  5. Step 5: Solve for x
    x = 37,251,554,121.74/223,015.05
  6. Step 6: Final answer
    x = 167,036.05

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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.