Home / 212,899.23-319,367.29-77,999.94

Finding the Fourth Proportional to 212,899.23, 319,367.29 and 77,999.94

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Solution

The fourth proportional to 212,899.23, 319,367.29 and 77,999.94 is: 117,006.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,899.23 : 319,367.29 = 77,999.94 : x
  2. Step 2: Convert to fraction form
    212,899.23/319,367.29 = 77,999.94/x
  3. Step 3: Cross multiply
    212,899.23x = 319,367.29 × 77,999.94
  4. Step 4: Simplify right side
    212,899.23x = 24,910,629,457.96
  5. Step 5: Solve for x
    x = 24,910,629,457.96/212,899.23
  6. Step 6: Final answer
    x = 117,006.67

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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.