Home / 130,811.83-180,471.88-82,400.76

Finding the Fourth Proportional to 130,811.83, 180,471.88 and 82,400.76

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Solution

The fourth proportional to 130,811.83, 180,471.88 and 82,400.76 is: 113,682.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,811.83 : 180,471.88 = 82,400.76 : x
  2. Step 2: Convert to fraction form
    130,811.83/180,471.88 = 82,400.76/x
  3. Step 3: Cross multiply
    130,811.83x = 180,471.88 × 82,400.76
  4. Step 4: Simplify right side
    130,811.83x = 14,871,020,173.63
  5. Step 5: Solve for x
    x = 14,871,020,173.63/130,811.83
  6. Step 6: Final answer
    x = 113,682.54

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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.