Home / 120,923.12-181,083-76,415.60

Finding the Fourth Proportional to 120,923.12, 181,083 and 76,415.60

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Solution

The fourth proportional to 120,923.12, 181,083 and 76,415.60 is: 114,432.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,923.12 : 181,083 = 76,415.60 : x
  2. Step 2: Convert to fraction form
    120,923.12/181,083 = 76,415.60/x
  3. Step 3: Cross multiply
    120,923.12x = 181,083 × 76,415.60
  4. Step 4: Simplify right side
    120,923.12x = 13,837,566,094.80
  5. Step 5: Solve for x
    x = 13,837,566,094.80/120,923.12
  6. Step 6: Final answer
    x = 114,432.76

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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.