Home / 165,765.40-248,777.70-77,029.90

Finding the Fourth Proportional to 165,765.40, 248,777.70 and 77,029.90

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Solution

The fourth proportional to 165,765.40, 248,777.70 and 77,029.90 is: 115,605.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,765.40 : 248,777.70 = 77,029.90 : x
  2. Step 2: Convert to fraction form
    165,765.40/248,777.70 = 77,029.90/x
  3. Step 3: Cross multiply
    165,765.40x = 248,777.70 × 77,029.90
  4. Step 4: Simplify right side
    165,765.40x = 19,163,321,353.23
  5. Step 5: Solve for x
    x = 19,163,321,353.23/165,765.40
  6. Step 6: Final answer
    x = 115,605.07

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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.