Home / 138,770.83-191,508.38-85,045.47

Finding the Fourth Proportional to 138,770.83, 191,508.38 and 85,045.47

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Solution

The fourth proportional to 138,770.83, 191,508.38 and 85,045.47 is: 117,365.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,770.83 : 191,508.38 = 85,045.47 : x
  2. Step 2: Convert to fraction form
    138,770.83/191,508.38 = 85,045.47/x
  3. Step 3: Cross multiply
    138,770.83x = 191,508.38 × 85,045.47
  4. Step 4: Simplify right side
    138,770.83x = 16,286,919,228.50
  5. Step 5: Solve for x
    x = 16,286,919,228.50/138,770.83
  6. Step 6: Final answer
    x = 117,365.58

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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.