Home / 139,975.64-193,167.51-76,313.89

Finding the Fourth Proportional to 139,975.64, 193,167.51 and 76,313.89

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Solution

The fourth proportional to 139,975.64, 193,167.51 and 76,313.89 is: 105,313.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,975.64 : 193,167.51 = 76,313.89 : x
  2. Step 2: Convert to fraction form
    139,975.64/193,167.51 = 76,313.89/x
  3. Step 3: Cross multiply
    139,975.64x = 193,167.51 × 76,313.89
  4. Step 4: Simplify right side
    139,975.64x = 14,741,363,626.80
  5. Step 5: Solve for x
    x = 14,741,363,626.80/139,975.64
  6. Step 6: Final answer
    x = 105,313.78

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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.