Home / 131,609.19-181,620.69-71,179.84

Finding the Fourth Proportional to 131,609.19, 181,620.69 and 71,179.84

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Solution

The fourth proportional to 131,609.19, 181,620.69 and 71,179.84 is: 98,228.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,609.19 : 181,620.69 = 71,179.84 : x
  2. Step 2: Convert to fraction form
    131,609.19/181,620.69 = 71,179.84/x
  3. Step 3: Cross multiply
    131,609.19x = 181,620.69 × 71,179.84
  4. Step 4: Simplify right side
    131,609.19x = 12,927,731,654.89
  5. Step 5: Solve for x
    x = 12,927,731,654.89/131,609.19
  6. Step 6: Final answer
    x = 98,228.18

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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.