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Finding the Fourth Proportional to 155,700.41, 214,822.11 and 87,693.62

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Solution

The fourth proportional to 155,700.41, 214,822.11 and 87,693.62 is: 120,992.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,700.41 : 214,822.11 = 87,693.62 : x
  2. Step 2: Convert to fraction form
    155,700.41/214,822.11 = 87,693.62/x
  3. Step 3: Cross multiply
    155,700.41x = 214,822.11 × 87,693.62
  4. Step 4: Simplify right side
    155,700.41x = 18,838,527,736.68
  5. Step 5: Solve for x
    x = 18,838,527,736.68/155,700.41
  6. Step 6: Final answer
    x = 120,992.16

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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.