Home / 117,534.23-161,926.55-81,200.87

Finding the Fourth Proportional to 117,534.23, 161,926.55 and 81,200.87

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Solution

The fourth proportional to 117,534.23, 161,926.55 and 81,200.87 is: 111,870.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,534.23 : 161,926.55 = 81,200.87 : x
  2. Step 2: Convert to fraction form
    117,534.23/161,926.55 = 81,200.87/x
  3. Step 3: Cross multiply
    117,534.23x = 161,926.55 × 81,200.87
  4. Step 4: Simplify right side
    117,534.23x = 13,148,576,736.10
  5. Step 5: Solve for x
    x = 13,148,576,736.10/117,534.23
  6. Step 6: Final answer
    x = 111,870.19

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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.