Home / 92,090.29-138,188.39-38,778.07

Finding the Fourth Proportional to 92,090.29, 138,188.39 and 38,778.07

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Solution

The fourth proportional to 92,090.29, 138,188.39 and 38,778.07 is: 58,189.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,090.29 : 138,188.39 = 38,778.07 : x
  2. Step 2: Convert to fraction form
    92,090.29/138,188.39 = 38,778.07/x
  3. Step 3: Cross multiply
    92,090.29x = 138,188.39 × 38,778.07
  4. Step 4: Simplify right side
    92,090.29x = 5,358,678,175.78
  5. Step 5: Solve for x
    x = 5,358,678,175.78/92,090.29
  6. Step 6: Final answer
    x = 58,189.39

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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.