Home / 120,483.12-180,563.40-53,909.04

Finding the Fourth Proportional to 120,483.12, 180,563.40 and 53,909.04

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Solution

The fourth proportional to 120,483.12, 180,563.40 and 53,909.04 is: 80,791.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,483.12 : 180,563.40 = 53,909.04 : x
  2. Step 2: Convert to fraction form
    120,483.12/180,563.40 = 53,909.04/x
  3. Step 3: Cross multiply
    120,483.12x = 180,563.40 × 53,909.04
  4. Step 4: Simplify right side
    120,483.12x = 9,733,999,553.14
  5. Step 5: Solve for x
    x = 9,733,999,553.14/120,483.12
  6. Step 6: Final answer
    x = 80,791.40

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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.