Home / 108,907.12-150,272.58-66,479.32

Finding the Fourth Proportional to 108,907.12, 150,272.58 and 66,479.32

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Solution

The fourth proportional to 108,907.12, 150,272.58 and 66,479.32 is: 91,729.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,907.12 : 150,272.58 = 66,479.32 : x
  2. Step 2: Convert to fraction form
    108,907.12/150,272.58 = 66,479.32/x
  3. Step 3: Cross multiply
    108,907.12x = 150,272.58 × 66,479.32
  4. Step 4: Simplify right side
    108,907.12x = 9,990,018,933.05
  5. Step 5: Solve for x
    x = 9,990,018,933.05/108,907.12
  6. Step 6: Final answer
    x = 91,729.71

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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.