Home / 120,726.45-166,662.45-75,429.59

Finding the Fourth Proportional to 120,726.45, 166,662.45 and 75,429.59

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Solution

The fourth proportional to 120,726.45, 166,662.45 and 75,429.59 is: 104,130.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,726.45 : 166,662.45 = 75,429.59 : x
  2. Step 2: Convert to fraction form
    120,726.45/166,662.45 = 75,429.59/x
  3. Step 3: Cross multiply
    120,726.45x = 166,662.45 × 75,429.59
  4. Step 4: Simplify right side
    120,726.45x = 12,571,279,438.58
  5. Step 5: Solve for x
    x = 12,571,279,438.58/120,726.45
  6. Step 6: Final answer
    x = 104,130.28

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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.