Home / 120,117.26-165,778.35-69,128.98

Finding the Fourth Proportional to 120,117.26, 165,778.35 and 69,128.98

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Solution

The fourth proportional to 120,117.26, 165,778.35 and 69,128.98 is: 95,407.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,117.26 : 165,778.35 = 69,128.98 : x
  2. Step 2: Convert to fraction form
    120,117.26/165,778.35 = 69,128.98/x
  3. Step 3: Cross multiply
    120,117.26x = 165,778.35 × 69,128.98
  4. Step 4: Simplify right side
    120,117.26x = 11,460,088,241.58
  5. Step 5: Solve for x
    x = 11,460,088,241.58/120,117.26
  6. Step 6: Final answer
    x = 95,407.51

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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.