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Finding the Fourth Proportional to 133,231.66, 199,985.91 and 89,166.34

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Solution

The fourth proportional to 133,231.66, 199,985.91 and 89,166.34 is: 133,842.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,231.66 : 199,985.91 = 89,166.34 : x
  2. Step 2: Convert to fraction form
    133,231.66/199,985.91 = 89,166.34/x
  3. Step 3: Cross multiply
    133,231.66x = 199,985.91 × 89,166.34
  4. Step 4: Simplify right side
    133,231.66x = 17,832,011,646.27
  5. Step 5: Solve for x
    x = 17,832,011,646.27/133,231.66
  6. Step 6: Final answer
    x = 133,842.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.