Home / 100,828.20-151,242.30-99,078.60

Finding the Fourth Proportional to 100,828.20, 151,242.30 and 99,078.60

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Solution

The fourth proportional to 100,828.20, 151,242.30 and 99,078.60 is: 148,617.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,828.20 : 151,242.30 = 99,078.60 : x
  2. Step 2: Convert to fraction form
    100,828.20/151,242.30 = 99,078.60/x
  3. Step 3: Cross multiply
    100,828.20x = 151,242.30 × 99,078.60
  4. Step 4: Simplify right side
    100,828.20x = 14,984,875,344.78
  5. Step 5: Solve for x
    x = 14,984,875,344.78/100,828.20
  6. Step 6: Final answer
    x = 148,617.90

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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.