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Finding the Fourth Proportional to 100,337.76, 138,462.36 and 55,014.68

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Solution

The fourth proportional to 100,337.76, 138,462.36 and 55,014.68 is: 75,918.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,337.76 : 138,462.36 = 55,014.68 : x
  2. Step 2: Convert to fraction form
    100,337.76/138,462.36 = 55,014.68/x
  3. Step 3: Cross multiply
    100,337.76x = 138,462.36 × 55,014.68
  4. Step 4: Simplify right side
    100,337.76x = 7,617,462,427.44
  5. Step 5: Solve for x
    x = 7,617,462,427.44/100,337.76
  6. Step 6: Final answer
    x = 75,918.20

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1.5x scale

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.