Home / 98,948.20-148,422.30-72,704.20

Finding the Fourth Proportional to 98,948.20, 148,422.30 and 72,704.20

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Solution

The fourth proportional to 98,948.20, 148,422.30 and 72,704.20 is: 109,056.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,948.20 : 148,422.30 = 72,704.20 : x
  2. Step 2: Convert to fraction form
    98,948.20/148,422.30 = 72,704.20/x
  3. Step 3: Cross multiply
    98,948.20x = 148,422.30 × 72,704.20
  4. Step 4: Simplify right side
    98,948.20x = 10,790,924,583.66
  5. Step 5: Solve for x
    x = 10,790,924,583.66/98,948.20
  6. Step 6: Final answer
    x = 109,056.30

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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.