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Finding the Fourth Proportional to 117,128.60, 161,637.53 and 63,413.58

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Solution

The fourth proportional to 117,128.60, 161,637.53 and 63,413.58 is: 87,510.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,128.60 : 161,637.53 = 63,413.58 : x
  2. Step 2: Convert to fraction form
    117,128.60/161,637.53 = 63,413.58/x
  3. Step 3: Cross multiply
    117,128.60x = 161,637.53 × 63,413.58
  4. Step 4: Simplify right side
    117,128.60x = 10,250,014,728.73
  5. Step 5: Solve for x
    x = 10,250,014,728.73/117,128.60
  6. Step 6: Final answer
    x = 87,510.78

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.