Home / 145,296.62-218,273.03-86,171.07

Finding the Fourth Proportional to 145,296.62, 218,273.03 and 86,171.07

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Solution

The fourth proportional to 145,296.62, 218,273.03 and 86,171.07 is: 129,451.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,296.62 : 218,273.03 = 86,171.07 : x
  2. Step 2: Convert to fraction form
    145,296.62/218,273.03 = 86,171.07/x
  3. Step 3: Cross multiply
    145,296.62x = 218,273.03 × 86,171.07
  4. Step 4: Simplify right side
    145,296.62x = 18,808,821,258.05
  5. Step 5: Solve for x
    x = 18,808,821,258.05/145,296.62
  6. Step 6: Final answer
    x = 129,451.20

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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.