Home / 159,585.08-220,220.78-86,986.37

Finding the Fourth Proportional to 159,585.08, 220,220.78 and 86,986.37

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Solution

The fourth proportional to 159,585.08, 220,220.78 and 86,986.37 is: 120,037.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,585.08 : 220,220.78 = 86,986.37 : x
  2. Step 2: Convert to fraction form
    159,585.08/220,220.78 = 86,986.37/x
  3. Step 3: Cross multiply
    159,585.08x = 220,220.78 × 86,986.37
  4. Step 4: Simplify right side
    159,585.08x = 19,156,207,106.15
  5. Step 5: Solve for x
    x = 19,156,207,106.15/159,585.08
  6. Step 6: Final answer
    x = 120,037.58

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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.