Home / 135,809.26-187,413.27-75,378.13

Finding the Fourth Proportional to 135,809.26, 187,413.27 and 75,378.13

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Solution

The fourth proportional to 135,809.26, 187,413.27 and 75,378.13 is: 104,019.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,809.26 : 187,413.27 = 75,378.13 : x
  2. Step 2: Convert to fraction form
    135,809.26/187,413.27 = 75,378.13/x
  3. Step 3: Cross multiply
    135,809.26x = 187,413.27 × 75,378.13
  4. Step 4: Simplify right side
    135,809.26x = 14,126,861,829.79
  5. Step 5: Solve for x
    x = 14,126,861,829.79/135,809.26
  6. Step 6: Final answer
    x = 104,019.87

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1.5x scale

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.