Home / 130,525.36-180,211.66-100,256.56

Finding the Fourth Proportional to 130,525.36, 180,211.66 and 100,256.56

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Solution

The fourth proportional to 130,525.36, 180,211.66 and 100,256.56 is: 138,420.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,525.36 : 180,211.66 = 100,256.56 : x
  2. Step 2: Convert to fraction form
    130,525.36/180,211.66 = 100,256.56/x
  3. Step 3: Cross multiply
    130,525.36x = 180,211.66 × 100,256.56
  4. Step 4: Simplify right side
    130,525.36x = 18,067,401,103.49
  5. Step 5: Solve for x
    x = 18,067,401,103.49/130,525.36
  6. Step 6: Final answer
    x = 138,420.62

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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.