Home / 189,140.62-261,011.28-104,255.86

Finding the Fourth Proportional to 189,140.62, 261,011.28 and 104,255.86

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Solution

The fourth proportional to 189,140.62, 261,011.28 and 104,255.86 is: 143,871.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,140.62 : 261,011.28 = 104,255.86 : x
  2. Step 2: Convert to fraction form
    189,140.62/261,011.28 = 104,255.86/x
  3. Step 3: Cross multiply
    189,140.62x = 261,011.28 × 104,255.86
  4. Step 4: Simplify right side
    189,140.62x = 27,211,955,466.10
  5. Step 5: Solve for x
    x = 27,211,955,466.10/189,140.62
  6. Step 6: Final answer
    x = 143,871.56

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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.