Home / 125,640.54-188,431.65-36,870.21

Finding the Fourth Proportional to 125,640.54, 188,431.65 and 36,870.21

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Solution

The fourth proportional to 125,640.54, 188,431.65 and 36,870.21 is: 55,296.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,640.54 : 188,431.65 = 36,870.21 : x
  2. Step 2: Convert to fraction form
    125,640.54/188,431.65 = 36,870.21/x
  3. Step 3: Cross multiply
    125,640.54x = 188,431.65 × 36,870.21
  4. Step 4: Simplify right side
    125,640.54x = 6,947,514,506.15
  5. Step 5: Solve for x
    x = 6,947,514,506.15/125,640.54
  6. Step 6: Final answer
    x = 55,296.76

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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.