Home / 124,736.68-172,136.10-68,149

Finding the Fourth Proportional to 124,736.68, 172,136.10 and 68,149

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Solution

The fourth proportional to 124,736.68, 172,136.10 and 68,149 is: 94,045.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,736.68 : 172,136.10 = 68,149 : x
  2. Step 2: Convert to fraction form
    124,736.68/172,136.10 = 68,149/x
  3. Step 3: Cross multiply
    124,736.68x = 172,136.10 × 68,149
  4. Step 4: Simplify right side
    124,736.68x = 11,730,903,078.90
  5. Step 5: Solve for x
    x = 11,730,903,078.90/124,736.68
  6. Step 6: Final answer
    x = 94,045.34

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1.5x scale

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.