Home / 130,404.05-179,929.92-76,669.46

Finding the Fourth Proportional to 130,404.05, 179,929.92 and 76,669.46

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Solution

The fourth proportional to 130,404.05, 179,929.92 and 76,669.46 is: 105,787.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,404.05 : 179,929.92 = 76,669.46 : x
  2. Step 2: Convert to fraction form
    130,404.05/179,929.92 = 76,669.46/x
  3. Step 3: Cross multiply
    130,404.05x = 179,929.92 × 76,669.46
  4. Step 4: Simplify right side
    130,404.05x = 13,795,129,804.24
  5. Step 5: Solve for x
    x = 13,795,129,804.24/130,404.05
  6. Step 6: Final answer
    x = 105,787.59

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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.