Home / 189,988.40-262,182.84-105,103.64

Finding the Fourth Proportional to 189,988.40, 262,182.84 and 105,103.64

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Solution

The fourth proportional to 189,988.40, 262,182.84 and 105,103.64 is: 145,042.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,988.40 : 262,182.84 = 105,103.64 : x
  2. Step 2: Convert to fraction form
    189,988.40/262,182.84 = 105,103.64/x
  3. Step 3: Cross multiply
    189,988.40x = 262,182.84 × 105,103.64
  4. Step 4: Simplify right side
    189,988.40x = 27,556,370,829.54
  5. Step 5: Solve for x
    x = 27,556,370,829.54/189,988.40
  6. Step 6: Final answer
    x = 145,042.39

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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.