Home / 130,129.11-179,579.61-76,414.77

Finding the Fourth Proportional to 130,129.11, 179,579.61 and 76,414.77

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Solution

The fourth proportional to 130,129.11, 179,579.61 and 76,414.77 is: 105,453.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,129.11 : 179,579.61 = 76,414.77 : x
  2. Step 2: Convert to fraction form
    130,129.11/179,579.61 = 76,414.77/x
  3. Step 3: Cross multiply
    130,129.11x = 179,579.61 × 76,414.77
  4. Step 4: Simplify right side
    130,129.11x = 13,722,534,594.84
  5. Step 5: Solve for x
    x = 13,722,534,594.84/130,129.11
  6. Step 6: Final answer
    x = 105,453.23

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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.