Home / 212,542.71-318,803.07-79,412.46

Finding the Fourth Proportional to 212,542.71, 318,803.07 and 79,412.46

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Solution

The fourth proportional to 212,542.71, 318,803.07 and 79,412.46 is: 119,114.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,542.71 : 318,803.07 = 79,412.46 : x
  2. Step 2: Convert to fraction form
    212,542.71/318,803.07 = 79,412.46/x
  3. Step 3: Cross multiply
    212,542.71x = 318,803.07 × 79,412.46
  4. Step 4: Simplify right side
    212,542.71x = 25,316,936,044.25
  5. Step 5: Solve for x
    x = 25,316,936,044.25/212,542.71
  6. Step 6: Final answer
    x = 119,114.58

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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.