Home / 135,824.16-187,440.40-76,208.16

Finding the Fourth Proportional to 135,824.16, 187,440.40 and 76,208.16

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Solution

The fourth proportional to 135,824.16, 187,440.40 and 76,208.16 is: 105,168.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,824.16 : 187,440.40 = 76,208.16 : x
  2. Step 2: Convert to fraction form
    135,824.16/187,440.40 = 76,208.16/x
  3. Step 3: Cross multiply
    135,824.16x = 187,440.40 × 76,208.16
  4. Step 4: Simplify right side
    135,824.16x = 14,284,487,993.66
  5. Step 5: Solve for x
    x = 14,284,487,993.66/135,824.16
  6. Step 6: Final answer
    x = 105,168.98

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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.