Home / 129,709.89-194,570.69-39,746.13

Finding the Fourth Proportional to 129,709.89, 194,570.69 and 39,746.13

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Solution

The fourth proportional to 129,709.89, 194,570.69 and 39,746.13 is: 59,620.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,709.89 : 194,570.69 = 39,746.13 : x
  2. Step 2: Convert to fraction form
    129,709.89/194,570.69 = 39,746.13/x
  3. Step 3: Cross multiply
    129,709.89x = 194,570.69 × 39,746.13
  4. Step 4: Simplify right side
    129,709.89x = 7,733,431,740.20
  5. Step 5: Solve for x
    x = 7,733,431,740.20/129,709.89
  6. Step 6: Final answer
    x = 59,620.99

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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.