Home / 153,231.90-229,355.37-81,976.74

Finding the Fourth Proportional to 153,231.90, 229,355.37 and 81,976.74

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Solution

The fourth proportional to 153,231.90, 229,355.37 and 81,976.74 is: 122,701.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,231.90 : 229,355.37 = 81,976.74 : x
  2. Step 2: Convert to fraction form
    153,231.90/229,355.37 = 81,976.74/x
  3. Step 3: Cross multiply
    153,231.90x = 229,355.37 × 81,976.74
  4. Step 4: Simplify right side
    153,231.90x = 18,801,805,534.09
  5. Step 5: Solve for x
    x = 18,801,805,534.09/153,231.90
  6. Step 6: Final answer
    x = 122,701.64

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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.