Home / 212,075.84-318,105.45-71,834.46

Finding the Fourth Proportional to 212,075.84, 318,105.45 and 71,834.46

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Solution

The fourth proportional to 212,075.84, 318,105.45 and 71,834.46 is: 107,748.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,075.84 : 318,105.45 = 71,834.46 : x
  2. Step 2: Convert to fraction form
    212,075.84/318,105.45 = 71,834.46/x
  3. Step 3: Cross multiply
    212,075.84x = 318,105.45 × 71,834.46
  4. Step 4: Simplify right side
    212,075.84x = 22,850,933,223.81
  5. Step 5: Solve for x
    x = 22,850,933,223.81/212,075.84
  6. Step 6: Final answer
    x = 107,748.88

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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.