Home / 137,198.16-189,344.88-76,774.38

Finding the Fourth Proportional to 137,198.16, 189,344.88 and 76,774.38

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Solution

The fourth proportional to 137,198.16, 189,344.88 and 76,774.38 is: 105,955.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,198.16 : 189,344.88 = 76,774.38 : x
  2. Step 2: Convert to fraction form
    137,198.16/189,344.88 = 76,774.38/x
  3. Step 3: Cross multiply
    137,198.16x = 189,344.88 × 76,774.38
  4. Step 4: Simplify right side
    137,198.16x = 14,536,835,768.17
  5. Step 5: Solve for x
    x = 14,536,835,768.17/137,198.16
  6. Step 6: Final answer
    x = 105,955.03

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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.