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Finding the Fourth Proportional to 149,532.01, 206,358.08 and 81,551.86

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Solution

The fourth proportional to 149,532.01, 206,358.08 and 81,551.86 is: 112,543.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,532.01 : 206,358.08 = 81,551.86 : x
  2. Step 2: Convert to fraction form
    149,532.01/206,358.08 = 81,551.86/x
  3. Step 3: Cross multiply
    149,532.01x = 206,358.08 × 81,551.86
  4. Step 4: Simplify right side
    149,532.01x = 16,828,884,326.37
  5. Step 5: Solve for x
    x = 16,828,884,326.37/149,532.01
  6. Step 6: Final answer
    x = 112,543.69

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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.