Home / 197,780.81-272,870.37-111,727.22

Finding the Fourth Proportional to 197,780.81, 272,870.37 and 111,727.22

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Solution

The fourth proportional to 197,780.81, 272,870.37 and 111,727.22 is: 154,145.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,780.81 : 272,870.37 = 111,727.22 : x
  2. Step 2: Convert to fraction form
    197,780.81/272,870.37 = 111,727.22/x
  3. Step 3: Cross multiply
    197,780.81x = 272,870.37 × 111,727.22
  4. Step 4: Simplify right side
    197,780.81x = 30,487,046,496.12
  5. Step 5: Solve for x
    x = 30,487,046,496.12/197,780.81
  6. Step 6: Final answer
    x = 154,145.63

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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.