Home / 189,108.72-260,962.34-103,065.87

Finding the Fourth Proportional to 189,108.72, 260,962.34 and 103,065.87

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Solution

The fourth proportional to 189,108.72, 260,962.34 and 103,065.87 is: 142,226.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,108.72 : 260,962.34 = 103,065.87 : x
  2. Step 2: Convert to fraction form
    189,108.72/260,962.34 = 103,065.87/x
  3. Step 3: Cross multiply
    189,108.72x = 260,962.34 × 103,065.87
  4. Step 4: Simplify right side
    189,108.72x = 26,896,310,609.34
  5. Step 5: Solve for x
    x = 26,896,310,609.34/189,108.72
  6. Step 6: Final answer
    x = 142,226.71

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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.