Home / 117,128.97-161,637.75-63,413.98

Finding the Fourth Proportional to 117,128.97, 161,637.75 and 63,413.98

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Solution

The fourth proportional to 117,128.97, 161,637.75 and 63,413.98 is: 87,511.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,128.97 : 161,637.75 = 63,413.98 : x
  2. Step 2: Convert to fraction form
    117,128.97/161,637.75 = 63,413.98/x
  3. Step 3: Cross multiply
    117,128.97x = 161,637.75 × 63,413.98
  4. Step 4: Simplify right side
    117,128.97x = 10,250,092,641.65
  5. Step 5: Solve for x
    x = 10,250,092,641.65/117,128.97
  6. Step 6: Final answer
    x = 87,511.17

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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.