Home / 120,543.49-180,814.88-30,586.03

Finding the Fourth Proportional to 120,543.49, 180,814.88 and 30,586.03

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Solution

The fourth proportional to 120,543.49, 180,814.88 and 30,586.03 is: 45,878.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,543.49 : 180,814.88 = 30,586.03 : x
  2. Step 2: Convert to fraction form
    120,543.49/180,814.88 = 30,586.03/x
  3. Step 3: Cross multiply
    120,543.49x = 180,814.88 × 30,586.03
  4. Step 4: Simplify right side
    120,543.49x = 5,530,409,899.61
  5. Step 5: Solve for x
    x = 5,530,409,899.61/120,543.49
  6. Step 6: Final answer
    x = 45,878.96

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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.