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Finding the Fourth Proportional to 212,138.61, 292,752.39 and 116,651.49

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Solution

The fourth proportional to 212,138.61, 292,752.39 and 116,651.49 is: 160,979.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,138.61 : 292,752.39 = 116,651.49 : x
  2. Step 2: Convert to fraction form
    212,138.61/292,752.39 = 116,651.49/x
  3. Step 3: Cross multiply
    212,138.61x = 292,752.39 × 116,651.49
  4. Step 4: Simplify right side
    212,138.61x = 34,150,002,494.56
  5. Step 5: Solve for x
    x = 34,150,002,494.56/212,138.61
  6. Step 6: Final answer
    x = 160,979.67

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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.