Home / 100,477.24-138,650.96-55,148.02

Finding the Fourth Proportional to 100,477.24, 138,650.96 and 55,148.02

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Solution

The fourth proportional to 100,477.24, 138,650.96 and 55,148.02 is: 76,100.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,477.24 : 138,650.96 = 55,148.02 : x
  2. Step 2: Convert to fraction form
    100,477.24/138,650.96 = 55,148.02/x
  3. Step 3: Cross multiply
    100,477.24x = 138,650.96 × 55,148.02
  4. Step 4: Simplify right side
    100,477.24x = 7,646,325,915.10
  5. Step 5: Solve for x
    x = 7,646,325,915.10/100,477.24
  6. Step 6: Final answer
    x = 76,100.08

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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.