Home / 119,720.85-165,215.88-66,007.86

Finding the Fourth Proportional to 119,720.85, 165,215.88 and 66,007.86

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Solution

The fourth proportional to 119,720.85, 165,215.88 and 66,007.86 is: 91,091.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,720.85 : 165,215.88 = 66,007.86 : x
  2. Step 2: Convert to fraction form
    119,720.85/165,215.88 = 66,007.86/x
  3. Step 3: Cross multiply
    119,720.85x = 165,215.88 × 66,007.86
  4. Step 4: Simplify right side
    119,720.85x = 10,905,546,676.82
  5. Step 5: Solve for x
    x = 10,905,546,676.82/119,720.85
  6. Step 6: Final answer
    x = 91,091.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.