Home / 158,136.10-218,233-86,514.48

Finding the Fourth Proportional to 158,136.10, 218,233 and 86,514.48

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Solution

The fourth proportional to 158,136.10, 218,233 and 86,514.48 is: 119,392.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,136.10 : 218,233 = 86,514.48 : x
  2. Step 2: Convert to fraction form
    158,136.10/218,233 = 86,514.48/x
  3. Step 3: Cross multiply
    158,136.10x = 218,233 × 86,514.48
  4. Step 4: Simplify right side
    158,136.10x = 18,880,314,513.84
  5. Step 5: Solve for x
    x = 18,880,314,513.84/158,136.10
  6. Step 6: Final answer
    x = 119,392.82

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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.