Home / 90,201.12-135,302.60-40,283.76

Finding the Fourth Proportional to 90,201.12, 135,302.60 and 40,283.76

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Solution

The fourth proportional to 90,201.12, 135,302.60 and 40,283.76 is: 60,426.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,201.12 : 135,302.60 = 40,283.76 : x
  2. Step 2: Convert to fraction form
    90,201.12/135,302.60 = 40,283.76/x
  3. Step 3: Cross multiply
    90,201.12x = 135,302.60 × 40,283.76
  4. Step 4: Simplify right side
    90,201.12x = 5,450,497,465.78
  5. Step 5: Solve for x
    x = 5,450,497,465.78/90,201.12
  6. Step 6: Final answer
    x = 60,426.05

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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.