Home / 119,712.85-179,448.08-77,619.58

Finding the Fourth Proportional to 119,712.85, 179,448.08 and 77,619.58

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Solution

The fourth proportional to 119,712.85, 179,448.08 and 77,619.58 is: 116,350.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,712.85 : 179,448.08 = 77,619.58 : x
  2. Step 2: Convert to fraction form
    119,712.85/179,448.08 = 77,619.58/x
  3. Step 3: Cross multiply
    119,712.85x = 179,448.08 × 77,619.58
  4. Step 4: Simplify right side
    119,712.85x = 13,928,683,764.69
  5. Step 5: Solve for x
    x = 13,928,683,764.69/119,712.85
  6. Step 6: Final answer
    x = 116,350.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.