Home / 90,677.32-135,759.34-69,305.54

Finding the Fourth Proportional to 90,677.32, 135,759.34 and 69,305.54

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Solution

The fourth proportional to 90,677.32, 135,759.34 and 69,305.54 is: 103,762.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,677.32 : 135,759.34 = 69,305.54 : x
  2. Step 2: Convert to fraction form
    90,677.32/135,759.34 = 69,305.54/x
  3. Step 3: Cross multiply
    90,677.32x = 135,759.34 × 69,305.54
  4. Step 4: Simplify right side
    90,677.32x = 9,408,874,708.14
  5. Step 5: Solve for x
    x = 9,408,874,708.14/90,677.32
  6. Step 6: Final answer
    x = 103,762.16

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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.