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Finding the Fourth Proportional to 131,356.68, 181,273.36 and 74,771.68

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Solution

The fourth proportional to 131,356.68, 181,273.36 and 74,771.68 is: 103,185.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,356.68 : 181,273.36 = 74,771.68 : x
  2. Step 2: Convert to fraction form
    131,356.68/181,273.36 = 74,771.68/x
  3. Step 3: Cross multiply
    131,356.68x = 181,273.36 × 74,771.68
  4. Step 4: Simplify right side
    131,356.68x = 13,554,113,666.44
  5. Step 5: Solve for x
    x = 13,554,113,666.44/131,356.68
  6. Step 6: Final answer
    x = 103,185.57

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.