Home / 137,019.64-189,111.17-79,676.70

Finding the Fourth Proportional to 137,019.64, 189,111.17 and 79,676.70

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Solution

The fourth proportional to 137,019.64, 189,111.17 and 79,676.70 is: 109,967.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,019.64 : 189,111.17 = 79,676.70 : x
  2. Step 2: Convert to fraction form
    137,019.64/189,111.17 = 79,676.70/x
  3. Step 3: Cross multiply
    137,019.64x = 189,111.17 × 79,676.70
  4. Step 4: Simplify right side
    137,019.64x = 15,067,753,560.36
  5. Step 5: Solve for x
    x = 15,067,753,560.36/137,019.64
  6. Step 6: Final answer
    x = 109,967.84

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1.5x scale

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.