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Finding the Fourth Proportional to 139,325.32, 192,327.80 and 94,064.61

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Solution

The fourth proportional to 139,325.32, 192,327.80 and 94,064.61 is: 129,848.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,325.32 : 192,327.80 = 94,064.61 : x
  2. Step 2: Convert to fraction form
    139,325.32/192,327.80 = 94,064.61/x
  3. Step 3: Cross multiply
    139,325.32x = 192,327.80 × 94,064.61
  4. Step 4: Simplify right side
    139,325.32x = 18,091,239,499.16
  5. Step 5: Solve for x
    x = 18,091,239,499.16/139,325.32
  6. Step 6: Final answer
    x = 129,848.90

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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.