Home / 259,661.10-389,710.35-102,002.70

Finding the Fourth Proportional to 259,661.10, 389,710.35 and 102,002.70

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Solution

The fourth proportional to 259,661.10, 389,710.35 and 102,002.70 is: 153,089.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,661.10 : 389,710.35 = 102,002.70 : x
  2. Step 2: Convert to fraction form
    259,661.10/389,710.35 = 102,002.70/x
  3. Step 3: Cross multiply
    259,661.10x = 389,710.35 × 102,002.70
  4. Step 4: Simplify right side
    259,661.10x = 39,751,507,917.95
  5. Step 5: Solve for x
    x = 39,751,507,917.95/259,661.10
  6. Step 6: Final answer
    x = 153,089.96

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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.