Home / 100,454.96-138,629-62,751.12

Finding the Fourth Proportional to 100,454.96, 138,629 and 62,751.12

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Solution

The fourth proportional to 100,454.96, 138,629 and 62,751.12 is: 86,597.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,454.96 : 138,629 = 62,751.12 : x
  2. Step 2: Convert to fraction form
    100,454.96/138,629 = 62,751.12/x
  3. Step 3: Cross multiply
    100,454.96x = 138,629 × 62,751.12
  4. Step 4: Simplify right side
    100,454.96x = 8,699,125,014.48
  5. Step 5: Solve for x
    x = 8,699,125,014.48/100,454.96
  6. Step 6: Final answer
    x = 86,597.27

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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.