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Finding the Fourth Proportional to 152,992.43, 211,125.03 and 85,007.71

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Solution

The fourth proportional to 152,992.43, 211,125.03 and 85,007.71 is: 117,308.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,992.43 : 211,125.03 = 85,007.71 : x
  2. Step 2: Convert to fraction form
    152,992.43/211,125.03 = 85,007.71/x
  3. Step 3: Cross multiply
    152,992.43x = 211,125.03 × 85,007.71
  4. Step 4: Simplify right side
    152,992.43x = 17,947,255,747.28
  5. Step 5: Solve for x
    x = 17,947,255,747.28/152,992.43
  6. Step 6: Final answer
    x = 117,308.13

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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.