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Finding the Fourth Proportional to 132,351.70, 182,671.87 and 78,626.34

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Solution

The fourth proportional to 132,351.70, 182,671.87 and 78,626.34 is: 108,520.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,351.70 : 182,671.87 = 78,626.34 : x
  2. Step 2: Convert to fraction form
    132,351.70/182,671.87 = 78,626.34/x
  3. Step 3: Cross multiply
    132,351.70x = 182,671.87 × 78,626.34
  4. Step 4: Simplify right side
    132,351.70x = 14,362,820,509.91
  5. Step 5: Solve for x
    x = 14,362,820,509.91/132,351.70
  6. Step 6: Final answer
    x = 108,520.11

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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.