Home / 140,639.87-194,082.32-76,109.06

Finding the Fourth Proportional to 140,639.87, 194,082.32 and 76,109.06

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Solution

The fourth proportional to 140,639.87, 194,082.32 and 76,109.06 is: 105,030.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,639.87 : 194,082.32 = 76,109.06 : x
  2. Step 2: Convert to fraction form
    140,639.87/194,082.32 = 76,109.06/x
  3. Step 3: Cross multiply
    140,639.87x = 194,082.32 × 76,109.06
  4. Step 4: Simplify right side
    140,639.87x = 14,771,422,557.27
  5. Step 5: Solve for x
    x = 14,771,422,557.27/140,639.87
  6. Step 6: Final answer
    x = 105,030.12

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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.