Home / 100,501.21-138,693.36-55,181.10

Finding the Fourth Proportional to 100,501.21, 138,693.36 and 55,181.10

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Solution

The fourth proportional to 100,501.21, 138,693.36 and 55,181.10 is: 76,150.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,501.21 : 138,693.36 = 55,181.10 : x
  2. Step 2: Convert to fraction form
    100,501.21/138,693.36 = 55,181.10/x
  3. Step 3: Cross multiply
    100,501.21x = 138,693.36 × 55,181.10
  4. Step 4: Simplify right side
    100,501.21x = 7,653,252,114.38
  5. Step 5: Solve for x
    x = 7,653,252,114.38/100,501.21
  6. Step 6: Final answer
    x = 76,150.85

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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.