Home / 120,311.37-180,365.55-75,840.08

Finding the Fourth Proportional to 120,311.37, 180,365.55 and 75,840.08

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Solution

The fourth proportional to 120,311.37, 180,365.55 and 75,840.08 is: 113,696.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,311.37 : 180,365.55 = 75,840.08 : x
  2. Step 2: Convert to fraction form
    120,311.37/180,365.55 = 75,840.08/x
  3. Step 3: Cross multiply
    120,311.37x = 180,365.55 × 75,840.08
  4. Step 4: Simplify right side
    120,311.37x = 13,678,936,839.42
  5. Step 5: Solve for x
    x = 13,678,936,839.42/120,311.37
  6. Step 6: Final answer
    x = 113,696.13

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1.5x scale

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.