Home / 261,120.42-391,039.47-127,570.14

Finding the Fourth Proportional to 261,120.42, 391,039.47 and 127,570.14

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Solution

The fourth proportional to 261,120.42, 391,039.47 and 127,570.14 is: 191,041.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,120.42 : 391,039.47 = 127,570.14 : x
  2. Step 2: Convert to fraction form
    261,120.42/391,039.47 = 127,570.14/x
  3. Step 3: Cross multiply
    261,120.42x = 391,039.47 × 127,570.14
  4. Step 4: Simplify right side
    261,120.42x = 49,884,959,933.43
  5. Step 5: Solve for x
    x = 49,884,959,933.43/261,120.42
  6. Step 6: Final answer
    x = 191,041.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.