Home / 90,763.02-135,865.86-82,209.42

Finding the Fourth Proportional to 90,763.02, 135,865.86 and 82,209.42

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Solution

The fourth proportional to 90,763.02, 135,865.86 and 82,209.42 is: 123,061.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,763.02 : 135,865.86 = 82,209.42 : x
  2. Step 2: Convert to fraction form
    90,763.02/135,865.86 = 82,209.42/x
  3. Step 3: Cross multiply
    90,763.02x = 135,865.86 × 82,209.42
  4. Step 4: Simplify right side
    90,763.02x = 11,169,453,548.40
  5. Step 5: Solve for x
    x = 11,169,453,548.40/90,763.02
  6. Step 6: Final answer
    x = 123,061.72

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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.