Home / 137,919.92-190,351.64-128,914.96

Finding the Fourth Proportional to 137,919.92, 190,351.64 and 128,914.96

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Solution

The fourth proportional to 137,919.92, 190,351.64 and 128,914.96 is: 177,923.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,919.92 : 190,351.64 = 128,914.96 : x
  2. Step 2: Convert to fraction form
    137,919.92/190,351.64 = 128,914.96/x
  3. Step 3: Cross multiply
    137,919.92x = 190,351.64 × 128,914.96
  4. Step 4: Simplify right side
    137,919.92x = 24,539,174,056.53
  5. Step 5: Solve for x
    x = 24,539,174,056.53/137,919.92
  6. Step 6: Final answer
    x = 177,923.35

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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.