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Finding the Fourth Proportional to 155,008.22, 213,942.87 and 89,599.86

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Solution

The fourth proportional to 155,008.22, 213,942.87 and 89,599.86 is: 123,666.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,008.22 : 213,942.87 = 89,599.86 : x
  2. Step 2: Convert to fraction form
    155,008.22/213,942.87 = 89,599.86/x
  3. Step 3: Cross multiply
    155,008.22x = 213,942.87 × 89,599.86
  4. Step 4: Simplify right side
    155,008.22x = 19,169,251,200.00
  5. Step 5: Solve for x
    x = 19,169,251,200.00/155,008.22
  6. Step 6: Final answer
    x = 123,666.03

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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.