Home / 130,493.24-180,077.60-76,781.73

Finding the Fourth Proportional to 130,493.24, 180,077.60 and 76,781.73

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Solution

The fourth proportional to 130,493.24, 180,077.60 and 76,781.73 is: 105,956.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,493.24 : 180,077.60 = 76,781.73 : x
  2. Step 2: Convert to fraction form
    130,493.24/180,077.60 = 76,781.73/x
  3. Step 3: Cross multiply
    130,493.24x = 180,077.60 × 76,781.73
  4. Step 4: Simplify right side
    130,493.24x = 13,826,669,662.25
  5. Step 5: Solve for x
    x = 13,826,669,662.25/130,493.24
  6. Step 6: Final answer
    x = 105,956.98

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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.