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Finding the Fourth Proportional to 133,095.05, 183,672.11 and 72,666.89

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Solution

The fourth proportional to 133,095.05, 183,672.11 and 72,666.89 is: 100,280.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,095.05 : 183,672.11 = 72,666.89 : x
  2. Step 2: Convert to fraction form
    133,095.05/183,672.11 = 72,666.89/x
  3. Step 3: Cross multiply
    133,095.05x = 183,672.11 × 72,666.89
  4. Step 4: Simplify right side
    133,095.05x = 13,346,881,013.44
  5. Step 5: Solve for x
    x = 13,346,881,013.44/133,095.05
  6. Step 6: Final answer
    x = 100,280.82

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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.