Home / 131,682.12-181,721.11-74,333.51

Finding the Fourth Proportional to 131,682.12, 181,721.11 and 74,333.51

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Solution

The fourth proportional to 131,682.12, 181,721.11 and 74,333.51 is: 102,580.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,682.12 : 181,721.11 = 74,333.51 : x
  2. Step 2: Convert to fraction form
    131,682.12/181,721.11 = 74,333.51/x
  3. Step 3: Cross multiply
    131,682.12x = 181,721.11 × 74,333.51
  4. Step 4: Simplify right side
    131,682.12x = 13,507,967,947.40
  5. Step 5: Solve for x
    x = 13,507,967,947.40/131,682.12
  6. Step 6: Final answer
    x = 102,580.12

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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.