Home / 131,191.76-181,097.16-86,586.32

Finding the Fourth Proportional to 131,191.76, 181,097.16 and 86,586.32

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Solution

The fourth proportional to 131,191.76, 181,097.16 and 86,586.32 is: 119,523.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,191.76 : 181,097.16 = 86,586.32 : x
  2. Step 2: Convert to fraction form
    131,191.76/181,097.16 = 86,586.32/x
  3. Step 3: Cross multiply
    131,191.76x = 181,097.16 × 86,586.32
  4. Step 4: Simplify right side
    131,191.76x = 15,680,536,646.85
  5. Step 5: Solve for x
    x = 15,680,536,646.85/131,191.76
  6. Step 6: Final answer
    x = 119,523.79

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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.