Home / 120,999.40-181,387.32-64,878.56

Finding the Fourth Proportional to 120,999.40, 181,387.32 and 64,878.56

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Solution

The fourth proportional to 120,999.40, 181,387.32 and 64,878.56 is: 97,257.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,999.40 : 181,387.32 = 64,878.56 : x
  2. Step 2: Convert to fraction form
    120,999.40/181,387.32 = 64,878.56/x
  3. Step 3: Cross multiply
    120,999.40x = 181,387.32 × 64,878.56
  4. Step 4: Simplify right side
    120,999.40x = 11,768,148,123.86
  5. Step 5: Solve for x
    x = 11,768,148,123.86/120,999.40
  6. Step 6: Final answer
    x = 97,257.90

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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.