Home / 135,442.31-202,339.79-87,668.20

Finding the Fourth Proportional to 135,442.31, 202,339.79 and 87,668.20

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Solution

The fourth proportional to 135,442.31, 202,339.79 and 87,668.20 is: 130,969.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,442.31 : 202,339.79 = 87,668.20 : x
  2. Step 2: Convert to fraction form
    135,442.31/202,339.79 = 87,668.20/x
  3. Step 3: Cross multiply
    135,442.31x = 202,339.79 × 87,668.20
  4. Step 4: Simplify right side
    135,442.31x = 17,738,764,891.00
  5. Step 5: Solve for x
    x = 17,738,764,891.00/135,442.31
  6. Step 6: Final answer
    x = 130,969.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.