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Finding the Fourth Proportional to 129,654, 178,918.04 and 73,062

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Solution

The fourth proportional to 129,654, 178,918.04 and 73,062 is: 100,823.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,654 : 178,918.04 = 73,062 : x
  2. Step 2: Convert to fraction form
    129,654/178,918.04 = 73,062/x
  3. Step 3: Cross multiply
    129,654x = 178,918.04 × 73,062
  4. Step 4: Simplify right side
    129,654x = 13,072,109,838.48
  5. Step 5: Solve for x
    x = 13,072,109,838.48/129,654
  6. Step 6: Final answer
    x = 100,823.04

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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.