Home / 212,303.27-318,508.37-79,187.87

Finding the Fourth Proportional to 212,303.27, 318,508.37 and 79,187.87

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Solution

The fourth proportional to 212,303.27, 318,508.37 and 79,187.87 is: 118,801.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,303.27 : 318,508.37 = 79,187.87 : x
  2. Step 2: Convert to fraction form
    212,303.27/318,508.37 = 79,187.87/x
  3. Step 3: Cross multiply
    212,303.27x = 318,508.37 × 79,187.87
  4. Step 4: Simplify right side
    212,303.27x = 25,221,999,001.53
  5. Step 5: Solve for x
    x = 25,221,999,001.53/212,303.27
  6. Step 6: Final answer
    x = 118,801.75

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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.