Home / 122,136.29-168,536.81-68,423.57

Finding the Fourth Proportional to 122,136.29, 168,536.81 and 68,423.57

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Solution

The fourth proportional to 122,136.29, 168,536.81 and 68,423.57 is: 94,418.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,136.29 : 168,536.81 = 68,423.57 : x
  2. Step 2: Convert to fraction form
    122,136.29/168,536.81 = 68,423.57/x
  3. Step 3: Cross multiply
    122,136.29x = 168,536.81 × 68,423.57
  4. Step 4: Simplify right side
    122,136.29x = 11,531,889,874.49
  5. Step 5: Solve for x
    x = 11,531,889,874.49/122,136.29
  6. Step 6: Final answer
    x = 94,418.21

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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.