Home / 212,289.39-318,423.69-79,159.23

Finding the Fourth Proportional to 212,289.39, 318,423.69 and 79,159.23

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Solution

The fourth proportional to 212,289.39, 318,423.69 and 79,159.23 is: 118,734.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,289.39 : 318,423.69 = 79,159.23 : x
  2. Step 2: Convert to fraction form
    212,289.39/318,423.69 = 79,159.23/x
  3. Step 3: Cross multiply
    212,289.39x = 318,423.69 × 79,159.23
  4. Step 4: Simplify right side
    212,289.39x = 25,206,174,114.16
  5. Step 5: Solve for x
    x = 25,206,174,114.16/212,289.39
  6. Step 6: Final answer
    x = 118,734.97

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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.