Home / 130,241.78-179,682.27-81,815.26

Finding the Fourth Proportional to 130,241.78, 179,682.27 and 81,815.26

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Solution

The fourth proportional to 130,241.78, 179,682.27 and 81,815.26 is: 112,872.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,241.78 : 179,682.27 = 81,815.26 : x
  2. Step 2: Convert to fraction form
    130,241.78/179,682.27 = 81,815.26/x
  3. Step 3: Cross multiply
    130,241.78x = 179,682.27 × 81,815.26
  4. Step 4: Simplify right side
    130,241.78x = 14,700,751,637.44
  5. Step 5: Solve for x
    x = 14,700,751,637.44/130,241.78
  6. Step 6: Final answer
    x = 112,872.78

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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.