Home / 90,123.12-135,172.95-23,568.38

Finding the Fourth Proportional to 90,123.12, 135,172.95 and 23,568.38

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Solution

The fourth proportional to 90,123.12, 135,172.95 and 23,568.38 is: 35,349.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,123.12 : 135,172.95 = 23,568.38 : x
  2. Step 2: Convert to fraction form
    90,123.12/135,172.95 = 23,568.38/x
  3. Step 3: Cross multiply
    90,123.12x = 135,172.95 × 23,568.38
  4. Step 4: Simplify right side
    90,123.12x = 3,185,807,789.25
  5. Step 5: Solve for x
    x = 3,185,807,789.25/90,123.12
  6. Step 6: Final answer
    x = 35,349.51

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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.