Home / 217,772.80-326,821.20-112,537.60

Finding the Fourth Proportional to 217,772.80, 326,821.20 and 112,537.60

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Solution

The fourth proportional to 217,772.80, 326,821.20 and 112,537.60 is: 168,890.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,772.80 : 326,821.20 = 112,537.60 : x
  2. Step 2: Convert to fraction form
    217,772.80/326,821.20 = 112,537.60/x
  3. Step 3: Cross multiply
    217,772.80x = 326,821.20 × 112,537.60
  4. Step 4: Simplify right side
    217,772.80x = 36,779,673,477.12
  5. Step 5: Solve for x
    x = 36,779,673,477.12/217,772.80
  6. Step 6: Final answer
    x = 168,890.12

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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.