Home / 138,476.91-207,632.15-54,136.62

Finding the Fourth Proportional to 138,476.91, 207,632.15 and 54,136.62

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Solution

The fourth proportional to 138,476.91, 207,632.15 and 54,136.62 is: 81,172.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,476.91 : 207,632.15 = 54,136.62 : x
  2. Step 2: Convert to fraction form
    138,476.91/207,632.15 = 54,136.62/x
  3. Step 3: Cross multiply
    138,476.91x = 207,632.15 × 54,136.62
  4. Step 4: Simplify right side
    138,476.91x = 11,240,502,533.65
  5. Step 5: Solve for x
    x = 11,240,502,533.65/138,476.91
  6. Step 6: Final answer
    x = 81,172.40

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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.