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Finding the Fourth Proportional to 172,386.63, 237,820.46 and 105,279.75

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Solution

The fourth proportional to 172,386.63, 237,820.46 and 105,279.75 is: 145,241.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,386.63 : 237,820.46 = 105,279.75 : x
  2. Step 2: Convert to fraction form
    172,386.63/237,820.46 = 105,279.75/x
  3. Step 3: Cross multiply
    172,386.63x = 237,820.46 × 105,279.75
  4. Step 4: Simplify right side
    172,386.63x = 25,037,678,047.29
  5. Step 5: Solve for x
    x = 25,037,678,047.29/172,386.63
  6. Step 6: Final answer
    x = 145,241.41

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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.