Home / 120,887.20-181,330.80-76,369.60

Finding the Fourth Proportional to 120,887.20, 181,330.80 and 76,369.60

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Solution

The fourth proportional to 120,887.20, 181,330.80 and 76,369.60 is: 114,554.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,887.20 : 181,330.80 = 76,369.60 : x
  2. Step 2: Convert to fraction form
    120,887.20/181,330.80 = 76,369.60/x
  3. Step 3: Cross multiply
    120,887.20x = 181,330.80 × 76,369.60
  4. Step 4: Simplify right side
    120,887.20x = 13,848,160,663.68
  5. Step 5: Solve for x
    x = 13,848,160,663.68/120,887.20
  6. Step 6: Final answer
    x = 114,554.40

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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.