Home / 120,156.44-165,814.16-66,440.28

Finding the Fourth Proportional to 120,156.44, 165,814.16 and 66,440.28

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Solution

The fourth proportional to 120,156.44, 165,814.16 and 66,440.28 is: 91,686.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,156.44 : 165,814.16 = 66,440.28 : x
  2. Step 2: Convert to fraction form
    120,156.44/165,814.16 = 66,440.28/x
  3. Step 3: Cross multiply
    120,156.44x = 165,814.16 × 66,440.28
  4. Step 4: Simplify right side
    120,156.44x = 11,016,738,886.16
  5. Step 5: Solve for x
    x = 11,016,738,886.16/120,156.44
  6. Step 6: Final answer
    x = 91,686.63

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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.