Home / 137,118.03-189,222.35-76,688.43

Finding the Fourth Proportional to 137,118.03, 189,222.35 and 76,688.43

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Solution

The fourth proportional to 137,118.03, 189,222.35 and 76,688.43 is: 105,829.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,118.03 : 189,222.35 = 76,688.43 : x
  2. Step 2: Convert to fraction form
    137,118.03/189,222.35 = 76,688.43/x
  3. Step 3: Cross multiply
    137,118.03x = 189,222.35 × 76,688.43
  4. Step 4: Simplify right side
    137,118.03x = 14,511,164,558.97
  5. Step 5: Solve for x
    x = 14,511,164,558.97/137,118.03
  6. Step 6: Final answer
    x = 105,829.73

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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.