Home / 130,679.25-180,309.55-76,944.66

Finding the Fourth Proportional to 130,679.25, 180,309.55 and 76,944.66

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Solution

The fourth proportional to 130,679.25, 180,309.55 and 76,944.66 is: 106,167.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,679.25 : 180,309.55 = 76,944.66 : x
  2. Step 2: Convert to fraction form
    130,679.25/180,309.55 = 76,944.66/x
  3. Step 3: Cross multiply
    130,679.25x = 180,309.55 × 76,944.66
  4. Step 4: Simplify right side
    130,679.25x = 13,873,857,019.50
  5. Step 5: Solve for x
    x = 13,873,857,019.50/130,679.25
  6. Step 6: Final answer
    x = 106,167.25

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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.