Home / 137,621.43-189,919.17-76,368.89

Finding the Fourth Proportional to 137,621.43, 189,919.17 and 76,368.89

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Solution

The fourth proportional to 137,621.43, 189,919.17 and 76,368.89 is: 105,389.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,621.43 : 189,919.17 = 76,368.89 : x
  2. Step 2: Convert to fraction form
    137,621.43/189,919.17 = 76,368.89/x
  3. Step 3: Cross multiply
    137,621.43x = 189,919.17 × 76,368.89
  4. Step 4: Simplify right side
    137,621.43x = 14,503,915,253.03
  5. Step 5: Solve for x
    x = 14,503,915,253.03/137,621.43
  6. Step 6: Final answer
    x = 105,389.95

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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.