Home / 162,075.36-243,115.20-68,512.80

Finding the Fourth Proportional to 162,075.36, 243,115.20 and 68,512.80

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Solution

The fourth proportional to 162,075.36, 243,115.20 and 68,512.80 is: 102,770.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,075.36 : 243,115.20 = 68,512.80 : x
  2. Step 2: Convert to fraction form
    162,075.36/243,115.20 = 68,512.80/x
  3. Step 3: Cross multiply
    162,075.36x = 243,115.20 × 68,512.80
  4. Step 4: Simplify right side
    162,075.36x = 16,656,503,074.56
  5. Step 5: Solve for x
    x = 16,656,503,074.56/162,075.36
  6. Step 6: Final answer
    x = 102,770.11

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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.