Home / 145,769.54-218,579.25-66,816.14

Finding the Fourth Proportional to 145,769.54, 218,579.25 and 66,816.14

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Solution

The fourth proportional to 145,769.54, 218,579.25 and 66,816.14 is: 100,189.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,769.54 : 218,579.25 = 66,816.14 : x
  2. Step 2: Convert to fraction form
    145,769.54/218,579.25 = 66,816.14/x
  3. Step 3: Cross multiply
    145,769.54x = 218,579.25 × 66,816.14
  4. Step 4: Simplify right side
    145,769.54x = 14,604,621,769.10
  5. Step 5: Solve for x
    x = 14,604,621,769.10/145,769.54
  6. Step 6: Final answer
    x = 100,189.80

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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.