Home / 170,790.18-256,341.52-86,608.45

Finding the Fourth Proportional to 170,790.18, 256,341.52 and 86,608.45

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Solution

The fourth proportional to 170,790.18, 256,341.52 and 86,608.45 is: 129,991.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,790.18 : 256,341.52 = 86,608.45 : x
  2. Step 2: Convert to fraction form
    170,790.18/256,341.52 = 86,608.45/x
  3. Step 3: Cross multiply
    170,790.18x = 256,341.52 × 86,608.45
  4. Step 4: Simplify right side
    170,790.18x = 22,201,340,458.57
  5. Step 5: Solve for x
    x = 22,201,340,458.57/170,790.18
  6. Step 6: Final answer
    x = 129,991.91

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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.