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Finding the Fourth Proportional to 135,468.84, 203,328.03 and 68,956.50

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Solution

The fourth proportional to 135,468.84, 203,328.03 and 68,956.50 is: 103,498.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,468.84 : 203,328.03 = 68,956.50 : x
  2. Step 2: Convert to fraction form
    135,468.84/203,328.03 = 68,956.50/x
  3. Step 3: Cross multiply
    135,468.84x = 203,328.03 × 68,956.50
  4. Step 4: Simplify right side
    135,468.84x = 14,020,789,300.70
  5. Step 5: Solve for x
    x = 14,020,789,300.70/135,468.84
  6. Step 6: Final answer
    x = 103,498.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.