Home / 129,424.65-194,136.84-40,685.91

Finding the Fourth Proportional to 129,424.65, 194,136.84 and 40,685.91

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Solution

The fourth proportional to 129,424.65, 194,136.84 and 40,685.91 is: 61,028.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,424.65 : 194,136.84 = 40,685.91 : x
  2. Step 2: Convert to fraction form
    129,424.65/194,136.84 = 40,685.91/x
  3. Step 3: Cross multiply
    129,424.65x = 194,136.84 × 40,685.91
  4. Step 4: Simplify right side
    129,424.65x = 7,898,633,999.92
  5. Step 5: Solve for x
    x = 7,898,633,999.92/129,424.65
  6. Step 6: Final answer
    x = 61,028.82

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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.