Home / 139,475.85-192,470.34-79,042.96

Finding the Fourth Proportional to 139,475.85, 192,470.34 and 79,042.96

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Solution

The fourth proportional to 139,475.85, 192,470.34 and 79,042.96 is: 109,075.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,475.85 : 192,470.34 = 79,042.96 : x
  2. Step 2: Convert to fraction form
    139,475.85/192,470.34 = 79,042.96/x
  3. Step 3: Cross multiply
    139,475.85x = 192,470.34 × 79,042.96
  4. Step 4: Simplify right side
    139,475.85x = 15,213,425,385.81
  5. Step 5: Solve for x
    x = 15,213,425,385.81/139,475.85
  6. Step 6: Final answer
    x = 109,075.70

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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.