Home / 100,187.83-138,259.27-54,247.33

Finding the Fourth Proportional to 100,187.83, 138,259.27 and 54,247.33

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Solution

The fourth proportional to 100,187.83, 138,259.27 and 54,247.33 is: 74,861.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,187.83 : 138,259.27 = 54,247.33 : x
  2. Step 2: Convert to fraction form
    100,187.83/138,259.27 = 54,247.33/x
  3. Step 3: Cross multiply
    100,187.83x = 138,259.27 × 54,247.33
  4. Step 4: Simplify right side
    100,187.83x = 7,500,196,245.25
  5. Step 5: Solve for x
    x = 7,500,196,245.25/100,187.83
  6. Step 6: Final answer
    x = 74,861.35

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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.