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Finding the Fourth Proportional to 136,138.76, 204,030.66 and 69,522.74

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Solution

The fourth proportional to 136,138.76, 204,030.66 and 69,522.74 is: 104,193.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,138.76 : 204,030.66 = 69,522.74 : x
  2. Step 2: Convert to fraction form
    136,138.76/204,030.66 = 69,522.74/x
  3. Step 3: Cross multiply
    136,138.76x = 204,030.66 × 69,522.74
  4. Step 4: Simplify right side
    136,138.76x = 14,184,770,527.21
  5. Step 5: Solve for x
    x = 14,184,770,527.21/136,138.76
  6. Step 6: Final answer
    x = 104,193.48

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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.