Home / 137,083.78-189,193.23-76,657.81

Finding the Fourth Proportional to 137,083.78, 189,193.23 and 76,657.81

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Solution

The fourth proportional to 137,083.78, 189,193.23 and 76,657.81 is: 105,797.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,083.78 : 189,193.23 = 76,657.81 : x
  2. Step 2: Convert to fraction form
    137,083.78/189,193.23 = 76,657.81/x
  3. Step 3: Cross multiply
    137,083.78x = 189,193.23 × 76,657.81
  4. Step 4: Simplify right side
    137,083.78x = 14,503,137,870.02
  5. Step 5: Solve for x
    x = 14,503,137,870.02/137,083.78
  6. Step 6: Final answer
    x = 105,797.62

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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.