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Finding the Fourth Proportional to 189,087.17, 260,940.35 and 103,046.18

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Solution

The fourth proportional to 189,087.17, 260,940.35 and 103,046.18 is: 142,203.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,087.17 : 260,940.35 = 103,046.18 : x
  2. Step 2: Convert to fraction form
    189,087.17/260,940.35 = 103,046.18/x
  3. Step 3: Cross multiply
    189,087.17x = 260,940.35 × 103,046.18
  4. Step 4: Simplify right side
    189,087.17x = 26,888,906,412.48
  5. Step 5: Solve for x
    x = 26,888,906,412.48/189,087.17
  6. Step 6: Final answer
    x = 142,203.76

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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.