Home / 129,538.86-194,315.25-40,799.31

Finding the Fourth Proportional to 129,538.86, 194,315.25 and 40,799.31

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Solution

The fourth proportional to 129,538.86, 194,315.25 and 40,799.31 is: 61,201.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,538.86 : 194,315.25 = 40,799.31 : x
  2. Step 2: Convert to fraction form
    129,538.86/194,315.25 = 40,799.31/x
  3. Step 3: Cross multiply
    129,538.86x = 194,315.25 × 40,799.31
  4. Step 4: Simplify right side
    129,538.86x = 7,927,928,639.82
  5. Step 5: Solve for x
    x = 7,927,928,639.82/129,538.86
  6. Step 6: Final answer
    x = 61,201.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.