Home / 131,754.51-181,821.19-71,325.11

Finding the Fourth Proportional to 131,754.51, 181,821.19 and 71,325.11

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Solution

The fourth proportional to 131,754.51, 181,821.19 and 71,325.11 is: 98,428.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,754.51 : 181,821.19 = 71,325.11 : x
  2. Step 2: Convert to fraction form
    131,754.51/181,821.19 = 71,325.11/x
  3. Step 3: Cross multiply
    131,754.51x = 181,821.19 × 71,325.11
  4. Step 4: Simplify right side
    131,754.51x = 12,968,415,719.09
  5. Step 5: Solve for x
    x = 12,968,415,719.09/131,754.51
  6. Step 6: Final answer
    x = 98,428.63

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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.