Home / 130,129.12-179,512.24-82,301.92

Finding the Fourth Proportional to 130,129.12, 179,512.24 and 82,301.92

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Solution

The fourth proportional to 130,129.12, 179,512.24 and 82,301.92 is: 113,534.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,129.12 : 179,512.24 = 82,301.92 : x
  2. Step 2: Convert to fraction form
    130,129.12/179,512.24 = 82,301.92/x
  3. Step 3: Cross multiply
    130,129.12x = 179,512.24 × 82,301.92
  4. Step 4: Simplify right side
    130,129.12x = 14,774,202,015.50
  5. Step 5: Solve for x
    x = 14,774,202,015.50/130,129.12
  6. Step 6: Final answer
    x = 113,534.94

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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.