Home / 103,771.23-155,656.89-80,113.34

Finding the Fourth Proportional to 103,771.23, 155,656.89 and 80,113.34

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Solution

The fourth proportional to 103,771.23, 155,656.89 and 80,113.34 is: 120,170.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,771.23 : 155,656.89 = 80,113.34 : x
  2. Step 2: Convert to fraction form
    103,771.23/155,656.89 = 80,113.34/x
  3. Step 3: Cross multiply
    103,771.23x = 155,656.89 × 80,113.34
  4. Step 4: Simplify right side
    103,771.23x = 12,470,192,573.63
  5. Step 5: Solve for x
    x = 12,470,192,573.63/103,771.23
  6. Step 6: Final answer
    x = 120,170.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.