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Finding the Fourth Proportional to 124,288.88, 171,464.01 and 83,987.96

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Solution

The fourth proportional to 124,288.88, 171,464.01 and 83,987.96 is: 115,866.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,288.88 : 171,464.01 = 83,987.96 : x
  2. Step 2: Convert to fraction form
    124,288.88/171,464.01 = 83,987.96/x
  3. Step 3: Cross multiply
    124,288.88x = 171,464.01 × 83,987.96
  4. Step 4: Simplify right side
    124,288.88x = 14,400,912,413.32
  5. Step 5: Solve for x
    x = 14,400,912,413.32/124,288.88
  6. Step 6: Final answer
    x = 115,866.46

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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.