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Finding the Fourth Proportional to 189,415.51, 261,392.88 and 104,531.97

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Solution

The fourth proportional to 189,415.51, 261,392.88 and 104,531.97 is: 144,253.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,415.51 : 261,392.88 = 104,531.97 : x
  2. Step 2: Convert to fraction form
    189,415.51/261,392.88 = 104,531.97/x
  3. Step 3: Cross multiply
    189,415.51x = 261,392.88 × 104,531.97
  4. Step 4: Simplify right side
    189,415.51x = 27,323,912,690.37
  5. Step 5: Solve for x
    x = 27,323,912,690.37/189,415.51
  6. Step 6: Final answer
    x = 144,253.83

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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.