Home / 139,741.45-192,837.41-79,311.00

Finding the Fourth Proportional to 139,741.45, 192,837.41 and 79,311.00

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Solution

The fourth proportional to 139,741.45, 192,837.41 and 79,311.00 is: 109,445.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,741.45 : 192,837.41 = 79,311.00 : x
  2. Step 2: Convert to fraction form
    139,741.45/192,837.41 = 79,311.00/x
  3. Step 3: Cross multiply
    139,741.45x = 192,837.41 × 79,311.00
  4. Step 4: Simplify right side
    139,741.45x = 15,294,127,363.80
  5. Step 5: Solve for x
    x = 15,294,127,363.80/139,741.45
  6. Step 6: Final answer
    x = 109,445.89

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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.