Home / 117,128.06-161,636.79-63,413.09

Finding the Fourth Proportional to 117,128.06, 161,636.79 and 63,413.09

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Solution

The fourth proportional to 117,128.06, 161,636.79 and 63,413.09 is: 87,510.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,128.06 : 161,636.79 = 63,413.09 : x
  2. Step 2: Convert to fraction form
    117,128.06/161,636.79 = 63,413.09/x
  3. Step 3: Cross multiply
    117,128.06x = 161,636.79 × 63,413.09
  4. Step 4: Simplify right side
    117,128.06x = 10,249,888,311.58
  5. Step 5: Solve for x
    x = 10,249,888,311.58/117,128.06
  6. Step 6: Final answer
    x = 87,510.10

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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.