Home / 80,334.05-120,374.31-65,267.66

Finding the Fourth Proportional to 80,334.05, 120,374.31 and 65,267.66

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Solution

The fourth proportional to 80,334.05, 120,374.31 and 65,267.66 is: 97,798.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,334.05 : 120,374.31 = 65,267.66 : x
  2. Step 2: Convert to fraction form
    80,334.05/120,374.31 = 65,267.66/x
  3. Step 3: Cross multiply
    80,334.05x = 120,374.31 × 65,267.66
  4. Step 4: Simplify right side
    80,334.05x = 7,856,549,537.81
  5. Step 5: Solve for x
    x = 7,856,549,537.81/80,334.05
  6. Step 6: Final answer
    x = 97,798.50

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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.