Home / 90,228.75-135,342.51-70,523.88

Finding the Fourth Proportional to 90,228.75, 135,342.51 and 70,523.88

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Solution

The fourth proportional to 90,228.75, 135,342.51 and 70,523.88 is: 105,785.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,228.75 : 135,342.51 = 70,523.88 : x
  2. Step 2: Convert to fraction form
    90,228.75/135,342.51 = 70,523.88/x
  3. Step 3: Cross multiply
    90,228.75x = 135,342.51 × 70,523.88
  4. Step 4: Simplify right side
    90,228.75x = 9,544,878,257.43
  5. Step 5: Solve for x
    x = 9,544,878,257.43/90,228.75
  6. Step 6: Final answer
    x = 105,785.34

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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.