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Finding the Fourth Proportional to 189,675.77, 261,749.49 and 103,632.90

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Solution

The fourth proportional to 189,675.77, 261,749.49 and 103,632.90 is: 143,011.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,675.77 : 261,749.49 = 103,632.90 : x
  2. Step 2: Convert to fraction form
    189,675.77/261,749.49 = 103,632.90/x
  3. Step 3: Cross multiply
    189,675.77x = 261,749.49 × 103,632.90
  4. Step 4: Simplify right side
    189,675.77x = 27,125,858,722.22
  5. Step 5: Solve for x
    x = 27,125,858,722.22/189,675.77
  6. Step 6: Final answer
    x = 143,011.72

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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.