Home / 188,288.13-259,843.61-103,405.20

Finding the Fourth Proportional to 188,288.13, 259,843.61 and 103,405.20

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Solution

The fourth proportional to 188,288.13, 259,843.61 and 103,405.20 is: 142,702.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,288.13 : 259,843.61 = 103,405.20 : x
  2. Step 2: Convert to fraction form
    188,288.13/259,843.61 = 103,405.20/x
  3. Step 3: Cross multiply
    188,288.13x = 259,843.61 × 103,405.20
  4. Step 4: Simplify right side
    188,288.13x = 26,869,180,460.77
  5. Step 5: Solve for x
    x = 26,869,180,460.77/188,288.13
  6. Step 6: Final answer
    x = 142,702.47

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1.5x scale

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.