Home / 188,331.12-259,883.64-103,432.32

Finding the Fourth Proportional to 188,331.12, 259,883.64 and 103,432.32

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Solution

The fourth proportional to 188,331.12, 259,883.64 and 103,432.32 is: 142,729.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,331.12 : 259,883.64 = 103,432.32 : x
  2. Step 2: Convert to fraction form
    188,331.12/259,883.64 = 103,432.32/x
  3. Step 3: Cross multiply
    188,331.12x = 259,883.64 × 103,432.32
  4. Step 4: Simplify right side
    188,331.12x = 26,880,367,815.24
  5. Step 5: Solve for x
    x = 26,880,367,815.24/188,331.12
  6. Step 6: Final answer
    x = 142,729.29

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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.