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Finding the Fourth Proportional to 131,305.76, 181,140 and 95,480

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Solution

The fourth proportional to 131,305.76, 181,140 and 95,480 is: 131,717.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,305.76 : 181,140 = 95,480 : x
  2. Step 2: Convert to fraction form
    131,305.76/181,140 = 95,480/x
  3. Step 3: Cross multiply
    131,305.76x = 181,140 × 95,480
  4. Step 4: Simplify right side
    131,305.76x = 17,295,247,200
  5. Step 5: Solve for x
    x = 17,295,247,200/131,305.76
  6. Step 6: Final answer
    x = 131,717.35

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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.