Home / 189,514.49-261,412.11-112,980.42

Finding the Fourth Proportional to 189,514.49, 261,412.11 and 112,980.42

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Solution

The fourth proportional to 189,514.49, 261,412.11 and 112,980.42 is: 155,842.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,514.49 : 261,412.11 = 112,980.42 : x
  2. Step 2: Convert to fraction form
    189,514.49/261,412.11 = 112,980.42/x
  3. Step 3: Cross multiply
    189,514.49x = 261,412.11 × 112,980.42
  4. Step 4: Simplify right side
    189,514.49x = 29,534,449,980.89
  5. Step 5: Solve for x
    x = 29,534,449,980.89/189,514.49
  6. Step 6: Final answer
    x = 155,842.71

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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.