Home / 90,218.75-135,327.51-70,513.88

Finding the Fourth Proportional to 90,218.75, 135,327.51 and 70,513.88

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Solution

The fourth proportional to 90,218.75, 135,327.51 and 70,513.88 is: 105,770.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,218.75 : 135,327.51 = 70,513.88 : x
  2. Step 2: Convert to fraction form
    90,218.75/135,327.51 = 70,513.88/x
  3. Step 3: Cross multiply
    90,218.75x = 135,327.51 × 70,513.88
  4. Step 4: Simplify right side
    90,218.75x = 9,542,467,124.20
  5. Step 5: Solve for x
    x = 9,542,467,124.20/90,218.75
  6. Step 6: Final answer
    x = 105,770.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.