Home / 149,238.42-205,915.68-125,136.87

Finding the Fourth Proportional to 149,238.42, 205,915.68 and 125,136.87

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Solution

The fourth proportional to 149,238.42, 205,915.68 and 125,136.87 is: 172,660.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,238.42 : 205,915.68 = 125,136.87 : x
  2. Step 2: Convert to fraction form
    149,238.42/205,915.68 = 125,136.87/x
  3. Step 3: Cross multiply
    149,238.42x = 205,915.68 × 125,136.87
  4. Step 4: Simplify right side
    149,238.42x = 25,767,643,679.12
  5. Step 5: Solve for x
    x = 25,767,643,679.12/149,238.42
  6. Step 6: Final answer
    x = 172,660.93

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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.