Home / 130,688.28-180,321.96-76,953.66

Finding the Fourth Proportional to 130,688.28, 180,321.96 and 76,953.66

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Solution

The fourth proportional to 130,688.28, 180,321.96 and 76,953.66 is: 106,179.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,688.28 : 180,321.96 = 76,953.66 : x
  2. Step 2: Convert to fraction form
    130,688.28/180,321.96 = 76,953.66/x
  3. Step 3: Cross multiply
    130,688.28x = 180,321.96 × 76,953.66
  4. Step 4: Simplify right side
    130,688.28x = 13,876,434,800.37
  5. Step 5: Solve for x
    x = 13,876,434,800.37/130,688.28
  6. Step 6: Final answer
    x = 106,179.64

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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.