Home / 207,621.30-286,517.40-112,128.02

Finding the Fourth Proportional to 207,621.30, 286,517.40 and 112,128.02

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Solution

The fourth proportional to 207,621.30, 286,517.40 and 112,128.02 is: 154,736.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,621.30 : 286,517.40 = 112,128.02 : x
  2. Step 2: Convert to fraction form
    207,621.30/286,517.40 = 112,128.02/x
  3. Step 3: Cross multiply
    207,621.30x = 286,517.40 × 112,128.02
  4. Step 4: Simplify right side
    207,621.30x = 32,126,628,757.55
  5. Step 5: Solve for x
    x = 32,126,628,757.55/207,621.30
  6. Step 6: Final answer
    x = 154,736.67

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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.