Home / 125,644.21-173,429.40-80,443.93

Finding the Fourth Proportional to 125,644.21, 173,429.40 and 80,443.93

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Solution

The fourth proportional to 125,644.21, 173,429.40 and 80,443.93 is: 111,038.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,644.21 : 173,429.40 = 80,443.93 : x
  2. Step 2: Convert to fraction form
    125,644.21/173,429.40 = 80,443.93/x
  3. Step 3: Cross multiply
    125,644.21x = 173,429.40 × 80,443.93
  4. Step 4: Simplify right side
    125,644.21x = 13,951,342,513.54
  5. Step 5: Solve for x
    x = 13,951,342,513.54/125,644.21
  6. Step 6: Final answer
    x = 111,038.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.