Home / 90,823.30-136,040.55-75,271.30

Finding the Fourth Proportional to 90,823.30, 136,040.55 and 75,271.30

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Solution

The fourth proportional to 90,823.30, 136,040.55 and 75,271.30 is: 112,745.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,823.30 : 136,040.55 = 75,271.30 : x
  2. Step 2: Convert to fraction form
    90,823.30/136,040.55 = 75,271.30/x
  3. Step 3: Cross multiply
    90,823.30x = 136,040.55 × 75,271.30
  4. Step 4: Simplify right side
    90,823.30x = 10,239,949,051.22
  5. Step 5: Solve for x
    x = 10,239,949,051.22/90,823.30
  6. Step 6: Final answer
    x = 112,745.84

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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.