Home / 212,289.66-318,424.06-79,159.50

Finding the Fourth Proportional to 212,289.66, 318,424.06 and 79,159.50

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Solution

The fourth proportional to 212,289.66, 318,424.06 and 79,159.50 is: 118,735.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,289.66 : 318,424.06 = 79,159.50 : x
  2. Step 2: Convert to fraction form
    212,289.66/318,424.06 = 79,159.50/x
  3. Step 3: Cross multiply
    212,289.66x = 318,424.06 × 79,159.50
  4. Step 4: Simplify right side
    212,289.66x = 25,206,289,377.57
  5. Step 5: Solve for x
    x = 25,206,289,377.57/212,289.66
  6. Step 6: Final answer
    x = 118,735.36

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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.