Home / 145,991.25-201,467.97-78,923.25

Finding the Fourth Proportional to 145,991.25, 201,467.97 and 78,923.25

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Solution

The fourth proportional to 145,991.25, 201,467.97 and 78,923.25 is: 108,914.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,991.25 : 201,467.97 = 78,923.25 : x
  2. Step 2: Convert to fraction form
    145,991.25/201,467.97 = 78,923.25/x
  3. Step 3: Cross multiply
    145,991.25x = 201,467.97 × 78,923.25
  4. Step 4: Simplify right side
    145,991.25x = 15,900,506,963.30
  5. Step 5: Solve for x
    x = 15,900,506,963.30/145,991.25
  6. Step 6: Final answer
    x = 108,914.11

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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.