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Finding the Fourth Proportional to 123,649.64, 185,472.40 and 39,408.64

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Solution

The fourth proportional to 123,649.64, 185,472.40 and 39,408.64 is: 59,112.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,649.64 : 185,472.40 = 39,408.64 : x
  2. Step 2: Convert to fraction form
    123,649.64/185,472.40 = 39,408.64/x
  3. Step 3: Cross multiply
    123,649.64x = 185,472.40 × 39,408.64
  4. Step 4: Simplify right side
    123,649.64x = 7,309,215,041.54
  5. Step 5: Solve for x
    x = 7,309,215,041.54/123,649.64
  6. Step 6: Final answer
    x = 59,112.30

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1.5x scale

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.