Home / 136,872.52-189,014.48-129,418.08

Finding the Fourth Proportional to 136,872.52, 189,014.48 and 129,418.08

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Solution

The fourth proportional to 136,872.52, 189,014.48 and 129,418.08 is: 178,720.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,872.52 : 189,014.48 = 129,418.08 : x
  2. Step 2: Convert to fraction form
    136,872.52/189,014.48 = 129,418.08/x
  3. Step 3: Cross multiply
    136,872.52x = 189,014.48 × 129,418.08
  4. Step 4: Simplify right side
    136,872.52x = 24,461,891,093.80
  5. Step 5: Solve for x
    x = 24,461,891,093.80/136,872.52
  6. Step 6: Final answer
    x = 178,720.25

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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.