Home / 90,836.20-136,254.30-28,506.60

Finding the Fourth Proportional to 90,836.20, 136,254.30 and 28,506.60

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Solution

The fourth proportional to 90,836.20, 136,254.30 and 28,506.60 is: 42,759.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,836.20 : 136,254.30 = 28,506.60 : x
  2. Step 2: Convert to fraction form
    90,836.20/136,254.30 = 28,506.60/x
  3. Step 3: Cross multiply
    90,836.20x = 136,254.30 × 28,506.60
  4. Step 4: Simplify right side
    90,836.20x = 3,884,146,828.38
  5. Step 5: Solve for x
    x = 3,884,146,828.38/90,836.20
  6. Step 6: Final answer
    x = 42,759.90

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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.