Home / 259,710.64-389,516.75-91,191.35

Finding the Fourth Proportional to 259,710.64, 389,516.75 and 91,191.35

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Solution

The fourth proportional to 259,710.64, 389,516.75 and 91,191.35 is: 136,769.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,710.64 : 389,516.75 = 91,191.35 : x
  2. Step 2: Convert to fraction form
    259,710.64/389,516.75 = 91,191.35/x
  3. Step 3: Cross multiply
    259,710.64x = 389,516.75 × 91,191.35
  4. Step 4: Simplify right side
    259,710.64x = 35,520,559,139.92
  5. Step 5: Solve for x
    x = 35,520,559,139.92/259,710.64
  6. Step 6: Final answer
    x = 136,769.75

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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.