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Finding the Fourth Proportional to 131,704.01, 181,707.01 and 85,742.61

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Solution

The fourth proportional to 131,704.01, 181,707.01 and 85,742.61 is: 118,295.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,704.01 : 181,707.01 = 85,742.61 : x
  2. Step 2: Convert to fraction form
    131,704.01/181,707.01 = 85,742.61/x
  3. Step 3: Cross multiply
    131,704.01x = 181,707.01 × 85,742.61
  4. Step 4: Simplify right side
    131,704.01x = 15,580,033,292.70
  5. Step 5: Solve for x
    x = 15,580,033,292.70/131,704.01
  6. Step 6: Final answer
    x = 118,295.82

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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.