Home / 100,101.68-138,140.33-54,779.66

Finding the Fourth Proportional to 100,101.68, 138,140.33 and 54,779.66

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Solution

The fourth proportional to 100,101.68, 138,140.33 and 54,779.66 is: 75,595.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,101.68 : 138,140.33 = 54,779.66 : x
  2. Step 2: Convert to fraction form
    100,101.68/138,140.33 = 54,779.66/x
  3. Step 3: Cross multiply
    100,101.68x = 138,140.33 × 54,779.66
  4. Step 4: Simplify right side
    100,101.68x = 7,567,280,309.69
  5. Step 5: Solve for x
    x = 7,567,280,309.69/100,101.68
  6. Step 6: Final answer
    x = 75,595.94

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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.