Home / 165,768.15-248,488.20-81,459.30

Finding the Fourth Proportional to 165,768.15, 248,488.20 and 81,459.30

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Solution

The fourth proportional to 165,768.15, 248,488.20 and 81,459.30 is: 122,108.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,768.15 : 248,488.20 = 81,459.30 : x
  2. Step 2: Convert to fraction form
    165,768.15/248,488.20 = 81,459.30/x
  3. Step 3: Cross multiply
    165,768.15x = 248,488.20 × 81,459.30
  4. Step 4: Simplify right side
    165,768.15x = 20,241,674,830.26
  5. Step 5: Solve for x
    x = 20,241,674,830.26/165,768.15
  6. Step 6: Final answer
    x = 122,108.35

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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.