Home / 90,343.96-135,513.98-31,177.64

Finding the Fourth Proportional to 90,343.96, 135,513.98 and 31,177.64

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Solution

The fourth proportional to 90,343.96, 135,513.98 and 31,177.64 is: 46,765.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,343.96 : 135,513.98 = 31,177.64 : x
  2. Step 2: Convert to fraction form
    90,343.96/135,513.98 = 31,177.64/x
  3. Step 3: Cross multiply
    90,343.96x = 135,513.98 × 31,177.64
  4. Step 4: Simplify right side
    90,343.96x = 4,225,006,083.41
  5. Step 5: Solve for x
    x = 4,225,006,083.41/90,343.96
  6. Step 6: Final answer
    x = 46,765.78

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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.