Home / 211,923.68-318,009.46-78,898.19

Finding the Fourth Proportional to 211,923.68, 318,009.46 and 78,898.19

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Solution

The fourth proportional to 211,923.68, 318,009.46 and 78,898.19 is: 118,393.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,923.68 : 318,009.46 = 78,898.19 : x
  2. Step 2: Convert to fraction form
    211,923.68/318,009.46 = 78,898.19/x
  3. Step 3: Cross multiply
    211,923.68x = 318,009.46 × 78,898.19
  4. Step 4: Simplify right side
    211,923.68x = 25,090,371,394.66
  5. Step 5: Solve for x
    x = 25,090,371,394.66/211,923.68
  6. Step 6: Final answer
    x = 118,393.43

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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.