Home / 120,489.15-180,783.36-52,986.49

Finding the Fourth Proportional to 120,489.15, 180,783.36 and 52,986.49

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Solution

The fourth proportional to 120,489.15, 180,783.36 and 52,986.49 is: 79,501.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,489.15 : 180,783.36 = 52,986.49 : x
  2. Step 2: Convert to fraction form
    120,489.15/180,783.36 = 52,986.49/x
  3. Step 3: Cross multiply
    120,489.15x = 180,783.36 × 52,986.49
  4. Step 4: Simplify right side
    120,489.15x = 9,579,075,244.85
  5. Step 5: Solve for x
    x = 9,579,075,244.85/120,489.15
  6. Step 6: Final answer
    x = 79,501.56

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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.