Home / 212,285.42-318,417.74-79,155.29

Finding the Fourth Proportional to 212,285.42, 318,417.74 and 79,155.29

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Solution

The fourth proportional to 212,285.42, 318,417.74 and 79,155.29 is: 118,729.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,285.42 : 318,417.74 = 79,155.29 : x
  2. Step 2: Convert to fraction form
    212,285.42/318,417.74 = 79,155.29/x
  3. Step 3: Cross multiply
    212,285.42x = 318,417.74 × 79,155.29
  4. Step 4: Simplify right side
    212,285.42x = 25,204,448,951.11
  5. Step 5: Solve for x
    x = 25,204,448,951.11/212,285.42
  6. Step 6: Final answer
    x = 118,729.07

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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.