Home / 100,417.25-138,571.21-55,094.30

Finding the Fourth Proportional to 100,417.25, 138,571.21 and 55,094.30

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Solution

The fourth proportional to 100,417.25, 138,571.21 and 55,094.30 is: 76,027.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,417.25 : 138,571.21 = 55,094.30 : x
  2. Step 2: Convert to fraction form
    100,417.25/138,571.21 = 55,094.30/x
  3. Step 3: Cross multiply
    100,417.25x = 138,571.21 × 55,094.30
  4. Step 4: Simplify right side
    100,417.25x = 7,634,483,815.10
  5. Step 5: Solve for x
    x = 7,634,483,815.10/100,417.25
  6. Step 6: Final answer
    x = 76,027.61

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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.