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Finding the Fourth Proportional to 146,119.67, 218,985.73 and 75,039.43

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Solution

The fourth proportional to 146,119.67, 218,985.73 and 75,039.43 is: 112,459.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,119.67 : 218,985.73 = 75,039.43 : x
  2. Step 2: Convert to fraction form
    146,119.67/218,985.73 = 75,039.43/x
  3. Step 3: Cross multiply
    146,119.67x = 218,985.73 × 75,039.43
  4. Step 4: Simplify right side
    146,119.67x = 16,432,562,887.21
  5. Step 5: Solve for x
    x = 16,432,562,887.21/146,119.67
  6. Step 6: Final answer
    x = 112,459.63

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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.