Home / 259,672.11-389,551.23-91,148.72

Finding the Fourth Proportional to 259,672.11, 389,551.23 and 91,148.72

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Solution

The fourth proportional to 259,672.11, 389,551.23 and 91,148.72 is: 136,738.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,672.11 : 389,551.23 = 91,148.72 : x
  2. Step 2: Convert to fraction form
    259,672.11/389,551.23 = 91,148.72/x
  3. Step 3: Cross multiply
    259,672.11x = 389,551.23 × 91,148.72
  4. Step 4: Simplify right side
    259,672.11x = 35,507,094,041.17
  5. Step 5: Solve for x
    x = 35,507,094,041.17/259,672.11
  6. Step 6: Final answer
    x = 136,738.19

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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.