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Finding the Fourth Proportional to 139,767.93, 192,885.03 and 79,341.12

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Solution

The fourth proportional to 139,767.93, 192,885.03 and 79,341.12 is: 109,493.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,767.93 : 192,885.03 = 79,341.12 : x
  2. Step 2: Convert to fraction form
    139,767.93/192,885.03 = 79,341.12/x
  3. Step 3: Cross multiply
    139,767.93x = 192,885.03 × 79,341.12
  4. Step 4: Simplify right side
    139,767.93x = 15,303,714,311.43
  5. Step 5: Solve for x
    x = 15,303,714,311.43/139,767.93
  6. Step 6: Final answer
    x = 109,493.75

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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.