Home / 135,918.66-187,592.18-78,550.06

Finding the Fourth Proportional to 135,918.66, 187,592.18 and 78,550.06

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Solution

The fourth proportional to 135,918.66, 187,592.18 and 78,550.06 is: 108,413.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,918.66 : 187,592.18 = 78,550.06 : x
  2. Step 2: Convert to fraction form
    135,918.66/187,592.18 = 78,550.06/x
  3. Step 3: Cross multiply
    135,918.66x = 187,592.18 × 78,550.06
  4. Step 4: Simplify right side
    135,918.66x = 14,735,376,994.53
  5. Step 5: Solve for x
    x = 14,735,376,994.53/135,918.66
  6. Step 6: Final answer
    x = 108,413.20

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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.