Home / 120,163.28-165,829.20-66,450.08

Finding the Fourth Proportional to 120,163.28, 165,829.20 and 66,450.08

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Solution

The fourth proportional to 120,163.28, 165,829.20 and 66,450.08 is: 91,703.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,163.28 : 165,829.20 = 66,450.08 : x
  2. Step 2: Convert to fraction form
    120,163.28/165,829.20 = 66,450.08/x
  3. Step 3: Cross multiply
    120,163.28x = 165,829.20 × 66,450.08
  4. Step 4: Simplify right side
    120,163.28x = 11,019,363,606.34
  5. Step 5: Solve for x
    x = 11,019,363,606.34/120,163.28
  6. Step 6: Final answer
    x = 91,703.25

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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.