Home / 78,115.32-117,173.22-25,525.20

Finding the Fourth Proportional to 78,115.32, 117,173.22 and 25,525.20

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Solution

The fourth proportional to 78,115.32, 117,173.22 and 25,525.20 is: 38,287.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,115.32 : 117,173.22 = 25,525.20 : x
  2. Step 2: Convert to fraction form
    78,115.32/117,173.22 = 25,525.20/x
  3. Step 3: Cross multiply
    78,115.32x = 117,173.22 × 25,525.20
  4. Step 4: Simplify right side
    78,115.32x = 2,990,869,875.14
  5. Step 5: Solve for x
    x = 2,990,869,875.14/78,115.32
  6. Step 6: Final answer
    x = 38,287.88

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1.5x scale

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.