Home / 259,703.48-389,577.43-91,209.14

Finding the Fourth Proportional to 259,703.48, 389,577.43 and 91,209.14

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Solution

The fourth proportional to 259,703.48, 389,577.43 and 91,209.14 is: 136,821.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,703.48 : 389,577.43 = 91,209.14 : x
  2. Step 2: Convert to fraction form
    259,703.48/389,577.43 = 91,209.14/x
  3. Step 3: Cross multiply
    259,703.48x = 389,577.43 × 91,209.14
  4. Step 4: Simplify right side
    259,703.48x = 35,533,021,980.75
  5. Step 5: Solve for x
    x = 35,533,021,980.75/259,703.48
  6. Step 6: Final answer
    x = 136,821.51

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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.