Home / 120,331.81-166,051.31-65,873.44

Finding the Fourth Proportional to 120,331.81, 166,051.31 and 65,873.44

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Solution

The fourth proportional to 120,331.81, 166,051.31 and 65,873.44 is: 90,901.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,331.81 : 166,051.31 = 65,873.44 : x
  2. Step 2: Convert to fraction form
    120,331.81/166,051.31 = 65,873.44/x
  3. Step 3: Cross multiply
    120,331.81x = 166,051.31 × 65,873.44
  4. Step 4: Simplify right side
    120,331.81x = 10,938,371,006.21
  5. Step 5: Solve for x
    x = 10,938,371,006.21/120,331.81
  6. Step 6: Final answer
    x = 90,901.74

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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.