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Finding the Fourth Proportional to 131,393.57, 181,323.29 and 74,804.94

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Solution

The fourth proportional to 131,393.57, 181,323.29 and 74,804.94 is: 103,230.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,393.57 : 181,323.29 = 74,804.94 : x
  2. Step 2: Convert to fraction form
    131,393.57/181,323.29 = 74,804.94/x
  3. Step 3: Cross multiply
    131,393.57x = 181,323.29 × 74,804.94
  4. Step 4: Simplify right side
    131,393.57x = 13,563,878,016.07
  5. Step 5: Solve for x
    x = 13,563,878,016.07/131,393.57
  6. Step 6: Final answer
    x = 103,230.92

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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.