Home / 212,939.10-293,708.61-172,654.56

Finding the Fourth Proportional to 212,939.10, 293,708.61 and 172,654.56

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Solution

The fourth proportional to 212,939.10, 293,708.61 and 172,654.56 is: 238,143.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,939.10 : 293,708.61 = 172,654.56 : x
  2. Step 2: Convert to fraction form
    212,939.10/293,708.61 = 172,654.56/x
  3. Step 3: Cross multiply
    212,939.10x = 293,708.61 × 172,654.56
  4. Step 4: Simplify right side
    212,939.10x = 50,710,130,827.76
  5. Step 5: Solve for x
    x = 50,710,130,827.76/212,939.10
  6. Step 6: Final answer
    x = 238,143.82

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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.