Home / 212,292.76-318,340.74-79,137.28

Finding the Fourth Proportional to 212,292.76, 318,340.74 and 79,137.28

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Solution

The fourth proportional to 212,292.76, 318,340.74 and 79,137.28 is: 118,669.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,292.76 : 318,340.74 = 79,137.28 : x
  2. Step 2: Convert to fraction form
    212,292.76/318,340.74 = 79,137.28/x
  3. Step 3: Cross multiply
    212,292.76x = 318,340.74 × 79,137.28
  4. Step 4: Simplify right side
    212,292.76x = 25,192,620,276.79
  5. Step 5: Solve for x
    x = 25,192,620,276.79/212,292.76
  6. Step 6: Final answer
    x = 118,669.24

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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.