Home / 145,540.13-200,845.08-81,878

Finding the Fourth Proportional to 145,540.13, 200,845.08 and 81,878

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Solution

The fourth proportional to 145,540.13, 200,845.08 and 81,878 is: 112,991.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,540.13 : 200,845.08 = 81,878 : x
  2. Step 2: Convert to fraction form
    145,540.13/200,845.08 = 81,878/x
  3. Step 3: Cross multiply
    145,540.13x = 200,845.08 × 81,878
  4. Step 4: Simplify right side
    145,540.13x = 16,444,793,460.24
  5. Step 5: Solve for x
    x = 16,444,793,460.24/145,540.13
  6. Step 6: Final answer
    x = 112,991.47

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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.