Home / 90,140.66-135,148.72-39,515.41

Finding the Fourth Proportional to 90,140.66, 135,148.72 and 39,515.41

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Solution

The fourth proportional to 90,140.66, 135,148.72 and 39,515.41 is: 59,245.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,140.66 : 135,148.72 = 39,515.41 : x
  2. Step 2: Convert to fraction form
    90,140.66/135,148.72 = 39,515.41/x
  3. Step 3: Cross multiply
    90,140.66x = 135,148.72 × 39,515.41
  4. Step 4: Simplify right side
    90,140.66x = 5,340,457,226.01
  5. Step 5: Solve for x
    x = 5,340,457,226.01/90,140.66
  6. Step 6: Final answer
    x = 59,245.82

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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.