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Finding the Fourth Proportional to 131,646.48, 181,673 and 80,659.32

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Solution

The fourth proportional to 131,646.48, 181,673 and 80,659.32 is: 111,310.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,646.48 : 181,673 = 80,659.32 : x
  2. Step 2: Convert to fraction form
    131,646.48/181,673 = 80,659.32/x
  3. Step 3: Cross multiply
    131,646.48x = 181,673 × 80,659.32
  4. Step 4: Simplify right side
    131,646.48x = 14,653,620,642.36
  5. Step 5: Solve for x
    x = 14,653,620,642.36/131,646.48
  6. Step 6: Final answer
    x = 111,310.39

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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.