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Finding the Fourth Proportional to 189,339.84, 261,279.86 and 103,293.70

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Solution

The fourth proportional to 189,339.84, 261,279.86 and 103,293.70 is: 142,540.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,339.84 : 261,279.86 = 103,293.70 : x
  2. Step 2: Convert to fraction form
    189,339.84/261,279.86 = 103,293.70/x
  3. Step 3: Cross multiply
    189,339.84x = 261,279.86 × 103,293.70
  4. Step 4: Simplify right side
    189,339.84x = 26,988,563,474.88
  5. Step 5: Solve for x
    x = 26,988,563,474.88/189,339.84
  6. Step 6: Final answer
    x = 142,540.33

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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.