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Finding the Fourth Proportional to 188,702.22, 260,405.37 and 103,820.70

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Solution

The fourth proportional to 188,702.22, 260,405.37 and 103,820.70 is: 143,270.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,702.22 : 260,405.37 = 103,820.70 : x
  2. Step 2: Convert to fraction form
    188,702.22/260,405.37 = 103,820.70/x
  3. Step 3: Cross multiply
    188,702.22x = 260,405.37 × 103,820.70
  4. Step 4: Simplify right side
    188,702.22x = 27,035,467,797.16
  5. Step 5: Solve for x
    x = 27,035,467,797.16/188,702.22
  6. Step 6: Final answer
    x = 143,270.53

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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.