Home / 158,135.78-218,227.22-86,515.86

Finding the Fourth Proportional to 158,135.78, 218,227.22 and 86,515.86

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Solution

The fourth proportional to 158,135.78, 218,227.22 and 86,515.86 is: 119,391.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,135.78 : 218,227.22 = 86,515.86 : x
  2. Step 2: Convert to fraction form
    158,135.78/218,227.22 = 86,515.86/x
  3. Step 3: Cross multiply
    158,135.78x = 218,227.22 × 86,515.86
  4. Step 4: Simplify right side
    158,135.78x = 18,880,115,613.71
  5. Step 5: Solve for x
    x = 18,880,115,613.71/158,135.78
  6. Step 6: Final answer
    x = 119,391.80

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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.