Home / 212,325.19-318,537-72,083.81

Finding the Fourth Proportional to 212,325.19, 318,537 and 72,083.81

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Solution

The fourth proportional to 212,325.19, 318,537 and 72,083.81 is: 108,142.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,325.19 : 318,537 = 72,083.81 : x
  2. Step 2: Convert to fraction form
    212,325.19/318,537 = 72,083.81/x
  3. Step 3: Cross multiply
    212,325.19x = 318,537 × 72,083.81
  4. Step 4: Simplify right side
    212,325.19x = 22,961,361,382.31
  5. Step 5: Solve for x
    x = 22,961,361,382.31/212,325.19
  6. Step 6: Final answer
    x = 108,142.43

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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.