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Finding the Fourth Proportional to 132,980.67, 183,544.11 and 87,666.66

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Solution

The fourth proportional to 132,980.67, 183,544.11 and 87,666.66 is: 121,000.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,980.67 : 183,544.11 = 87,666.66 : x
  2. Step 2: Convert to fraction form
    132,980.67/183,544.11 = 87,666.66/x
  3. Step 3: Cross multiply
    132,980.67x = 183,544.11 × 87,666.66
  4. Step 4: Simplify right side
    132,980.67x = 16,090,699,086.37
  5. Step 5: Solve for x
    x = 16,090,699,086.37/132,980.67
  6. Step 6: Final answer
    x = 121,000.29

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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.