Home / 189,147.54-261,020.40-103,107.48

Finding the Fourth Proportional to 189,147.54, 261,020.40 and 103,107.48

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Solution

The fourth proportional to 189,147.54, 261,020.40 and 103,107.48 is: 142,286.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,147.54 : 261,020.40 = 103,107.48 : x
  2. Step 2: Convert to fraction form
    189,147.54/261,020.40 = 103,107.48/x
  3. Step 3: Cross multiply
    189,147.54x = 261,020.40 × 103,107.48
  4. Step 4: Simplify right side
    189,147.54x = 26,913,155,672.59
  5. Step 5: Solve for x
    x = 26,913,155,672.59/189,147.54
  6. Step 6: Final answer
    x = 142,286.58

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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.