Home / 158,132.77-218,223.10-86,512.84

Finding the Fourth Proportional to 158,132.77, 218,223.10 and 86,512.84

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Solution

The fourth proportional to 158,132.77, 218,223.10 and 86,512.84 is: 119,387.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,132.77 : 218,223.10 = 86,512.84 : x
  2. Step 2: Convert to fraction form
    158,132.77/218,223.10 = 86,512.84/x
  3. Step 3: Cross multiply
    158,132.77x = 218,223.10 × 86,512.84
  4. Step 4: Simplify right side
    158,132.77x = 18,879,100,134.60
  5. Step 5: Solve for x
    x = 18,879,100,134.60/158,132.77
  6. Step 6: Final answer
    x = 119,387.65

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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.