Home / 131,413.76-181,287.57-86,071.79

Finding the Fourth Proportional to 131,413.76, 181,287.57 and 86,071.79

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Solution

The fourth proportional to 131,413.76, 181,287.57 and 86,071.79 is: 118,737.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,413.76 : 181,287.57 = 86,071.79 : x
  2. Step 2: Convert to fraction form
    131,413.76/181,287.57 = 86,071.79/x
  3. Step 3: Cross multiply
    131,413.76x = 181,287.57 × 86,071.79
  4. Step 4: Simplify right side
    131,413.76x = 15,603,745,654.65
  5. Step 5: Solve for x
    x = 15,603,745,654.65/131,413.76
  6. Step 6: Final answer
    x = 118,737.53

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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.