Home / 120,130.62-165,772.89-66,412.41

Finding the Fourth Proportional to 120,130.62, 165,772.89 and 66,412.41

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Solution

The fourth proportional to 120,130.62, 165,772.89 and 66,412.41 is: 91,645.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,130.62 : 165,772.89 = 66,412.41 : x
  2. Step 2: Convert to fraction form
    120,130.62/165,772.89 = 66,412.41/x
  3. Step 3: Cross multiply
    120,130.62x = 165,772.89 × 66,412.41
  4. Step 4: Simplify right side
    120,130.62x = 11,009,377,137.56
  5. Step 5: Solve for x
    x = 11,009,377,137.56/120,130.62
  6. Step 6: Final answer
    x = 91,645.05

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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.