Home / 120,427.82-166,032.78-103,612.70

Finding the Fourth Proportional to 120,427.82, 166,032.78 and 103,612.70

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Solution

The fourth proportional to 120,427.82, 166,032.78 and 103,612.70 is: 142,849.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,427.82 : 166,032.78 = 103,612.70 : x
  2. Step 2: Convert to fraction form
    120,427.82/166,032.78 = 103,612.70/x
  3. Step 3: Cross multiply
    120,427.82x = 166,032.78 × 103,612.70
  4. Step 4: Simplify right side
    120,427.82x = 17,203,104,624.31
  5. Step 5: Solve for x
    x = 17,203,104,624.31/120,427.82
  6. Step 6: Final answer
    x = 142,849.92

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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.