Home / 118,878.32-164,051.78-71,131.65

Finding the Fourth Proportional to 118,878.32, 164,051.78 and 71,131.65

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Solution

The fourth proportional to 118,878.32, 164,051.78 and 71,131.65 is: 98,161.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,878.32 : 164,051.78 = 71,131.65 : x
  2. Step 2: Convert to fraction form
    118,878.32/164,051.78 = 71,131.65/x
  3. Step 3: Cross multiply
    118,878.32x = 164,051.78 × 71,131.65
  4. Step 4: Simplify right side
    118,878.32x = 11,669,273,441.18
  5. Step 5: Solve for x
    x = 11,669,273,441.18/118,878.32
  6. Step 6: Final answer
    x = 98,161.50

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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.