Home / 170,809.12-256,213.68-86,556.16

Finding the Fourth Proportional to 170,809.12, 256,213.68 and 86,556.16

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Solution

The fourth proportional to 170,809.12, 256,213.68 and 86,556.16 is: 129,834.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,809.12 : 256,213.68 = 86,556.16 : x
  2. Step 2: Convert to fraction form
    170,809.12/256,213.68 = 86,556.16/x
  3. Step 3: Cross multiply
    170,809.12x = 256,213.68 × 86,556.16
  4. Step 4: Simplify right side
    170,809.12x = 22,176,872,280.27
  5. Step 5: Solve for x
    x = 22,176,872,280.27/170,809.12
  6. Step 6: Final answer
    x = 129,834.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.