Home / 120,407.83-180,619.44-40,442.56

Finding the Fourth Proportional to 120,407.83, 180,619.44 and 40,442.56

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Solution

The fourth proportional to 120,407.83, 180,619.44 and 40,442.56 is: 60,666.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,407.83 : 180,619.44 = 40,442.56 : x
  2. Step 2: Convert to fraction form
    120,407.83/180,619.44 = 40,442.56/x
  3. Step 3: Cross multiply
    120,407.83x = 180,619.44 × 40,442.56
  4. Step 4: Simplify right side
    120,407.83x = 7,304,712,539.37
  5. Step 5: Solve for x
    x = 7,304,712,539.37/120,407.83
  6. Step 6: Final answer
    x = 60,666.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.