Home / 137,150.50-189,250.35-79,808.39

Finding the Fourth Proportional to 137,150.50, 189,250.35 and 79,808.39

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Solution

The fourth proportional to 137,150.50, 189,250.35 and 79,808.39 is: 110,125.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,150.50 : 189,250.35 = 79,808.39 : x
  2. Step 2: Convert to fraction form
    137,150.50/189,250.35 = 79,808.39/x
  3. Step 3: Cross multiply
    137,150.50x = 189,250.35 × 79,808.39
  4. Step 4: Simplify right side
    137,150.50x = 15,103,765,740.44
  5. Step 5: Solve for x
    x = 15,103,765,740.44/137,150.50
  6. Step 6: Final answer
    x = 110,125.49

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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.