Home / 165,415.40-248,252.70-76,679.90

Finding the Fourth Proportional to 165,415.40, 248,252.70 and 76,679.90

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Solution

The fourth proportional to 165,415.40, 248,252.70 and 76,679.90 is: 115,079.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,415.40 : 248,252.70 = 76,679.90 : x
  2. Step 2: Convert to fraction form
    165,415.40/248,252.70 = 76,679.90/x
  3. Step 3: Cross multiply
    165,415.40x = 248,252.70 × 76,679.90
  4. Step 4: Simplify right side
    165,415.40x = 19,035,992,210.73
  5. Step 5: Solve for x
    x = 19,035,992,210.73/165,415.40
  6. Step 6: Final answer
    x = 115,079.93

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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.