Home / 138,476.84-207,632.06-54,136.55

Finding the Fourth Proportional to 138,476.84, 207,632.06 and 54,136.55

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Solution

The fourth proportional to 138,476.84, 207,632.06 and 54,136.55 is: 81,172.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,476.84 : 207,632.06 = 54,136.55 : x
  2. Step 2: Convert to fraction form
    138,476.84/207,632.06 = 54,136.55/x
  3. Step 3: Cross multiply
    138,476.84x = 207,632.06 × 54,136.55
  4. Step 4: Simplify right side
    138,476.84x = 11,240,483,397.79
  5. Step 5: Solve for x
    x = 11,240,483,397.79/138,476.84
  6. Step 6: Final answer
    x = 81,172.30

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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.