Home / 137,069.59-189,147.27-76,645.21

Finding the Fourth Proportional to 137,069.59, 189,147.27 and 76,645.21

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Solution

The fourth proportional to 137,069.59, 189,147.27 and 76,645.21 is: 105,765.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,069.59 : 189,147.27 = 76,645.21 : x
  2. Step 2: Convert to fraction form
    137,069.59/189,147.27 = 76,645.21/x
  3. Step 3: Cross multiply
    137,069.59x = 189,147.27 × 76,645.21
  4. Step 4: Simplify right side
    137,069.59x = 14,497,232,230.08
  5. Step 5: Solve for x
    x = 14,497,232,230.08/137,069.59
  6. Step 6: Final answer
    x = 105,765.49

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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.