Home / 130,687.78-180,321.24-76,953.16

Finding the Fourth Proportional to 130,687.78, 180,321.24 and 76,953.16

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Solution

The fourth proportional to 130,687.78, 180,321.24 and 76,953.16 is: 106,178.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,687.78 : 180,321.24 = 76,953.16 : x
  2. Step 2: Convert to fraction form
    130,687.78/180,321.24 = 76,953.16/x
  3. Step 3: Cross multiply
    130,687.78x = 180,321.24 × 76,953.16
  4. Step 4: Simplify right side
    130,687.78x = 13,876,289,233.12
  5. Step 5: Solve for x
    x = 13,876,289,233.12/130,687.78
  6. Step 6: Final answer
    x = 106,178.93

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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.