Home / 135,807.90-187,413.06-75,378.36

Finding the Fourth Proportional to 135,807.90, 187,413.06 and 75,378.36

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Solution

The fourth proportional to 135,807.90, 187,413.06 and 75,378.36 is: 104,021.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,807.90 : 187,413.06 = 75,378.36 : x
  2. Step 2: Convert to fraction form
    135,807.90/187,413.06 = 75,378.36/x
  3. Step 3: Cross multiply
    135,807.90x = 187,413.06 × 75,378.36
  4. Step 4: Simplify right side
    135,807.90x = 14,126,889,105.38
  5. Step 5: Solve for x
    x = 14,126,889,105.38/135,807.90
  6. Step 6: Final answer
    x = 104,021.11

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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.