Home / 115,562.88-159,608.40-77,771.52

Finding the Fourth Proportional to 115,562.88, 159,608.40 and 77,771.52

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Solution

The fourth proportional to 115,562.88, 159,608.40 and 77,771.52 is: 107,413.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,562.88 : 159,608.40 = 77,771.52 : x
  2. Step 2: Convert to fraction form
    115,562.88/159,608.40 = 77,771.52/x
  3. Step 3: Cross multiply
    115,562.88x = 159,608.40 × 77,771.52
  4. Step 4: Simplify right side
    115,562.88x = 12,412,987,872.77
  5. Step 5: Solve for x
    x = 12,412,987,872.77/115,562.88
  6. Step 6: Final answer
    x = 107,413.28

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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.