Home / 212,301.27-318,505.37-79,185.87

Finding the Fourth Proportional to 212,301.27, 318,505.37 and 79,185.87

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Solution

The fourth proportional to 212,301.27, 318,505.37 and 79,185.87 is: 118,798.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,301.27 : 318,505.37 = 79,185.87 : x
  2. Step 2: Convert to fraction form
    212,301.27/318,505.37 = 79,185.87/x
  3. Step 3: Cross multiply
    212,301.27x = 318,505.37 × 79,185.87
  4. Step 4: Simplify right side
    212,301.27x = 25,221,124,427.19
  5. Step 5: Solve for x
    x = 25,221,124,427.19/212,301.27
  6. Step 6: Final answer
    x = 118,798.74

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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.