Home / 165,872.15-228,903.01-90,420.65

Finding the Fourth Proportional to 165,872.15, 228,903.01 and 90,420.65

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Solution

The fourth proportional to 165,872.15, 228,903.01 and 90,420.65 is: 124,780.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,872.15 : 228,903.01 = 90,420.65 : x
  2. Step 2: Convert to fraction form
    165,872.15/228,903.01 = 90,420.65/x
  3. Step 3: Cross multiply
    165,872.15x = 228,903.01 × 90,420.65
  4. Step 4: Simplify right side
    165,872.15x = 20,697,560,235.17
  5. Step 5: Solve for x
    x = 20,697,560,235.17/165,872.15
  6. Step 6: Final answer
    x = 124,780.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.