Home / 120,328.22-180,507.78-56,241.60

Finding the Fourth Proportional to 120,328.22, 180,507.78 and 56,241.60

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Solution

The fourth proportional to 120,328.22, 180,507.78 and 56,241.60 is: 84,369.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,328.22 : 180,507.78 = 56,241.60 : x
  2. Step 2: Convert to fraction form
    120,328.22/180,507.78 = 56,241.60/x
  3. Step 3: Cross multiply
    120,328.22x = 180,507.78 × 56,241.60
  4. Step 4: Simplify right side
    120,328.22x = 10,152,046,359.65
  5. Step 5: Solve for x
    x = 10,152,046,359.65/120,328.22
  6. Step 6: Final answer
    x = 84,369.62

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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.