Home / 120,113.52-165,747.96-66,399.50

Finding the Fourth Proportional to 120,113.52, 165,747.96 and 66,399.50

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Solution

The fourth proportional to 120,113.52, 165,747.96 and 66,399.50 is: 91,626.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,113.52 : 165,747.96 = 66,399.50 : x
  2. Step 2: Convert to fraction form
    120,113.52/165,747.96 = 66,399.50/x
  3. Step 3: Cross multiply
    120,113.52x = 165,747.96 × 66,399.50
  4. Step 4: Simplify right side
    120,113.52x = 11,005,580,841.28
  5. Step 5: Solve for x
    x = 11,005,580,841.28/120,113.52
  6. Step 6: Final answer
    x = 91,626.50

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1.5x scale

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.