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Finding the Fourth Proportional to 100,101.94, 138,140.68 and 54,779.92

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Solution

The fourth proportional to 100,101.94, 138,140.68 and 54,779.92 is: 75,596.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,101.94 : 138,140.68 = 54,779.92 : x
  2. Step 2: Convert to fraction form
    100,101.94/138,140.68 = 54,779.92/x
  3. Step 3: Cross multiply
    100,101.94x = 138,140.68 × 54,779.92
  4. Step 4: Simplify right side
    100,101.94x = 7,567,335,399.15
  5. Step 5: Solve for x
    x = 7,567,335,399.15/100,101.94
  6. Step 6: Final answer
    x = 75,596.29

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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.