Home / 158,272.38-218,407.59-86,638.68

Finding the Fourth Proportional to 158,272.38, 218,407.59 and 86,638.68

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Solution

The fourth proportional to 158,272.38, 218,407.59 and 86,638.68 is: 119,556.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,272.38 : 218,407.59 = 86,638.68 : x
  2. Step 2: Convert to fraction form
    158,272.38/218,407.59 = 86,638.68/x
  3. Step 3: Cross multiply
    158,272.38x = 218,407.59 × 86,638.68
  4. Step 4: Simplify right side
    158,272.38x = 18,922,545,299.58
  5. Step 5: Solve for x
    x = 18,922,545,299.58/158,272.38
  6. Step 6: Final answer
    x = 119,556.84

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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.