Home / 129,911.12-179,285.64-73,301.84

Finding the Fourth Proportional to 129,911.12, 179,285.64 and 73,301.84

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Solution

The fourth proportional to 129,911.12, 179,285.64 and 73,301.84 is: 101,161.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,911.12 : 179,285.64 = 73,301.84 : x
  2. Step 2: Convert to fraction form
    129,911.12/179,285.64 = 73,301.84/x
  3. Step 3: Cross multiply
    129,911.12x = 179,285.64 × 73,301.84
  4. Step 4: Simplify right side
    129,911.12x = 13,141,967,297.58
  5. Step 5: Solve for x
    x = 13,141,967,297.58/129,911.12
  6. Step 6: Final answer
    x = 101,161.22

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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.