Home / 412,100.19-618,239.07-127,785

Finding the Fourth Proportional to 412,100.19, 618,239.07 and 127,785

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Solution

The fourth proportional to 412,100.19, 618,239.07 and 127,785 is: 191,705.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,100.19 : 618,239.07 = 127,785 : x
  2. Step 2: Convert to fraction form
    412,100.19/618,239.07 = 127,785/x
  3. Step 3: Cross multiply
    412,100.19x = 618,239.07 × 127,785
  4. Step 4: Simplify right side
    412,100.19x = 79,001,679,559.95
  5. Step 5: Solve for x
    x = 79,001,679,559.95/412,100.19
  6. Step 6: Final answer
    x = 191,705.03

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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.