Home / 130,932.54-180,678.87-77,219.82

Finding the Fourth Proportional to 130,932.54, 180,678.87 and 77,219.82

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Solution

The fourth proportional to 130,932.54, 180,678.87 and 77,219.82 is: 106,558.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,932.54 : 180,678.87 = 77,219.82 : x
  2. Step 2: Convert to fraction form
    130,932.54/180,678.87 = 77,219.82/x
  3. Step 3: Cross multiply
    130,932.54x = 180,678.87 × 77,219.82
  4. Step 4: Simplify right side
    130,932.54x = 13,951,989,819.20
  5. Step 5: Solve for x
    x = 13,951,989,819.20/130,932.54
  6. Step 6: Final answer
    x = 106,558.61

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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.