Home / 90,836.10-136,254.15-69,816.60

Finding the Fourth Proportional to 90,836.10, 136,254.15 and 69,816.60

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Solution

The fourth proportional to 90,836.10, 136,254.15 and 69,816.60 is: 104,724.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,836.10 : 136,254.15 = 69,816.60 : x
  2. Step 2: Convert to fraction form
    90,836.10/136,254.15 = 69,816.60/x
  3. Step 3: Cross multiply
    90,836.10x = 136,254.15 × 69,816.60
  4. Step 4: Simplify right side
    90,836.10x = 9,512,801,488.89
  5. Step 5: Solve for x
    x = 9,512,801,488.89/90,836.10
  6. Step 6: Final answer
    x = 104,724.90

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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.