Home / 90,868.23-136,323.95-28,538.73

Finding the Fourth Proportional to 90,868.23, 136,323.95 and 28,538.73

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Solution

The fourth proportional to 90,868.23, 136,323.95 and 28,538.73 is: 42,814.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,868.23 : 136,323.95 = 28,538.73 : x
  2. Step 2: Convert to fraction form
    90,868.23/136,323.95 = 28,538.73/x
  3. Step 3: Cross multiply
    90,868.23x = 136,323.95 × 28,538.73
  4. Step 4: Simplify right side
    90,868.23x = 3,890,512,258.89
  5. Step 5: Solve for x
    x = 3,890,512,258.89/90,868.23
  6. Step 6: Final answer
    x = 42,814.88

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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.