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Finding the Fourth Proportional to 189,062.69, 260,912.08 and 104,185.22

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Solution

The fourth proportional to 189,062.69, 260,912.08 and 104,185.22 is: 143,778.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,062.69 : 260,912.08 = 104,185.22 : x
  2. Step 2: Convert to fraction form
    189,062.69/260,912.08 = 104,185.22/x
  3. Step 3: Cross multiply
    189,062.69x = 260,912.08 × 104,185.22
  4. Step 4: Simplify right side
    189,062.69x = 27,183,182,455.46
  5. Step 5: Solve for x
    x = 27,183,182,455.46/189,062.69
  6. Step 6: Final answer
    x = 143,778.67

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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.