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Finding the Fourth Proportional to 145,553.52, 200,853.04 and 81,879.04

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Solution

The fourth proportional to 145,553.52, 200,853.04 and 81,879.04 is: 112,986.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,553.52 : 200,853.04 = 81,879.04 : x
  2. Step 2: Convert to fraction form
    145,553.52/200,853.04 = 81,879.04/x
  3. Step 3: Cross multiply
    145,553.52x = 200,853.04 × 81,879.04
  4. Step 4: Simplify right side
    145,553.52x = 16,445,654,096.28
  5. Step 5: Solve for x
    x = 16,445,654,096.28/145,553.52
  6. Step 6: Final answer
    x = 112,986.99

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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.