Home / 212,748.80-318,854.40-107,596.80

Finding the Fourth Proportional to 212,748.80, 318,854.40 and 107,596.80

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Solution

The fourth proportional to 212,748.80, 318,854.40 and 107,596.80 is: 161,259.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,748.80 : 318,854.40 = 107,596.80 : x
  2. Step 2: Convert to fraction form
    212,748.80/318,854.40 = 107,596.80/x
  3. Step 3: Cross multiply
    212,748.80x = 318,854.40 × 107,596.80
  4. Step 4: Simplify right side
    212,748.80x = 34,307,713,105.92
  5. Step 5: Solve for x
    x = 34,307,713,105.92/212,748.80
  6. Step 6: Final answer
    x = 161,259.26

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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.