Home / 120,782.34-181,090.89-61,503.30

Finding the Fourth Proportional to 120,782.34, 181,090.89 and 61,503.30

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Solution

The fourth proportional to 120,782.34, 181,090.89 and 61,503.30 is: 92,212.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,782.34 : 181,090.89 = 61,503.30 : x
  2. Step 2: Convert to fraction form
    120,782.34/181,090.89 = 61,503.30/x
  3. Step 3: Cross multiply
    120,782.34x = 181,090.89 × 61,503.30
  4. Step 4: Simplify right side
    120,782.34x = 11,137,687,334.94
  5. Step 5: Solve for x
    x = 11,137,687,334.94/120,782.34
  6. Step 6: Final answer
    x = 92,212.88

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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.