Home / 131,440.46-181,448.37-76,985.06

Finding the Fourth Proportional to 131,440.46, 181,448.37 and 76,985.06

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Solution

The fourth proportional to 131,440.46, 181,448.37 and 76,985.06 is: 106,274.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,440.46 : 181,448.37 = 76,985.06 : x
  2. Step 2: Convert to fraction form
    131,440.46/181,448.37 = 76,985.06/x
  3. Step 3: Cross multiply
    131,440.46x = 181,448.37 × 76,985.06
  4. Step 4: Simplify right side
    131,440.46x = 13,968,813,651.35
  5. Step 5: Solve for x
    x = 13,968,813,651.35/131,440.46
  6. Step 6: Final answer
    x = 106,274.84

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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.