Home / 90,516.02-135,774.02-28,191.38

Finding the Fourth Proportional to 90,516.02, 135,774.02 and 28,191.38

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Solution

The fourth proportional to 90,516.02, 135,774.02 and 28,191.38 is: 42,287.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,516.02 : 135,774.02 = 28,191.38 : x
  2. Step 2: Convert to fraction form
    90,516.02/135,774.02 = 28,191.38/x
  3. Step 3: Cross multiply
    90,516.02x = 135,774.02 × 28,191.38
  4. Step 4: Simplify right side
    90,516.02x = 3,827,656,383.56
  5. Step 5: Solve for x
    x = 3,827,656,383.56/90,516.02
  6. Step 6: Final answer
    x = 42,287.06

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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.