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Finding the Fourth Proportional to 189,087.46, 260,940.75 and 103,046.47

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Solution

The fourth proportional to 189,087.46, 260,940.75 and 103,046.47 is: 142,204.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,087.46 : 260,940.75 = 103,046.47 : x
  2. Step 2: Convert to fraction form
    189,087.46/260,940.75 = 103,046.47/x
  3. Step 3: Cross multiply
    189,087.46x = 260,940.75 × 103,046.47
  4. Step 4: Simplify right side
    189,087.46x = 26,889,023,166.65
  5. Step 5: Solve for x
    x = 26,889,023,166.65/189,087.46
  6. Step 6: Final answer
    x = 142,204.16

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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.