Home / 100,080.76-138,110.26-54,758.22

Finding the Fourth Proportional to 100,080.76, 138,110.26 and 54,758.22

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Solution

The fourth proportional to 100,080.76, 138,110.26 and 54,758.22 is: 75,565.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,080.76 : 138,110.26 = 54,758.22 : x
  2. Step 2: Convert to fraction form
    100,080.76/138,110.26 = 54,758.22/x
  3. Step 3: Cross multiply
    100,080.76x = 138,110.26 × 54,758.22
  4. Step 4: Simplify right side
    100,080.76x = 7,562,672,001.34
  5. Step 5: Solve for x
    x = 7,562,672,001.34/100,080.76
  6. Step 6: Final answer
    x = 75,565.69

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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.