Home / 125,515.48-173,235.90-77,790.04

Finding the Fourth Proportional to 125,515.48, 173,235.90 and 77,790.04

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Solution

The fourth proportional to 125,515.48, 173,235.90 and 77,790.04 is: 107,365.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,515.48 : 173,235.90 = 77,790.04 : x
  2. Step 2: Convert to fraction form
    125,515.48/173,235.90 = 77,790.04/x
  3. Step 3: Cross multiply
    125,515.48x = 173,235.90 × 77,790.04
  4. Step 4: Simplify right side
    125,515.48x = 13,476,027,590.44
  5. Step 5: Solve for x
    x = 13,476,027,590.44/125,515.48
  6. Step 6: Final answer
    x = 107,365.46

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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.