Home / 138,678.34-207,985.38-38,845.58

Finding the Fourth Proportional to 138,678.34, 207,985.38 and 38,845.58

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Solution

The fourth proportional to 138,678.34, 207,985.38 and 38,845.58 is: 58,259.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,678.34 : 207,985.38 = 38,845.58 : x
  2. Step 2: Convert to fraction form
    138,678.34/207,985.38 = 38,845.58/x
  3. Step 3: Cross multiply
    138,678.34x = 207,985.38 × 38,845.58
  4. Step 4: Simplify right side
    138,678.34x = 8,079,312,717.62
  5. Step 5: Solve for x
    x = 8,079,312,717.62/138,678.34
  6. Step 6: Final answer
    x = 58,259.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.