Home / 189,401.05-261,369.42-103,357.18

Finding the Fourth Proportional to 189,401.05, 261,369.42 and 103,357.18

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Solution

The fourth proportional to 189,401.05, 261,369.42 and 103,357.18 is: 142,630.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,401.05 : 261,369.42 = 103,357.18 : x
  2. Step 2: Convert to fraction form
    189,401.05/261,369.42 = 103,357.18/x
  3. Step 3: Cross multiply
    189,401.05x = 261,369.42 × 103,357.18
  4. Step 4: Simplify right side
    189,401.05x = 27,014,406,189.44
  5. Step 5: Solve for x
    x = 27,014,406,189.44/189,401.05
  6. Step 6: Final answer
    x = 142,630.71

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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.