Home / 236,820.13-326,807.97-129,387.86

Finding the Fourth Proportional to 236,820.13, 326,807.97 and 129,387.86

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Solution

The fourth proportional to 236,820.13, 326,807.97 and 129,387.86 is: 178,553.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,820.13 : 326,807.97 = 129,387.86 : x
  2. Step 2: Convert to fraction form
    236,820.13/326,807.97 = 129,387.86/x
  3. Step 3: Cross multiply
    236,820.13x = 326,807.97 × 129,387.86
  4. Step 4: Simplify right side
    236,820.13x = 42,284,982,056.38
  5. Step 5: Solve for x
    x = 42,284,982,056.38/236,820.13
  6. Step 6: Final answer
    x = 178,553.16

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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.