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Finding the Fourth Proportional to 139,676.39, 192,754.10 and 76,014.19

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Solution

The fourth proportional to 139,676.39, 192,754.10 and 76,014.19 is: 104,899.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,676.39 : 192,754.10 = 76,014.19 : x
  2. Step 2: Convert to fraction form
    139,676.39/192,754.10 = 76,014.19/x
  3. Step 3: Cross multiply
    139,676.39x = 192,754.10 × 76,014.19
  4. Step 4: Simplify right side
    139,676.39x = 14,652,046,488.83
  5. Step 5: Solve for x
    x = 14,652,046,488.83/139,676.39
  6. Step 6: Final answer
    x = 104,899.95

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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.