Home / 98,930.20-148,395.30-72,686.20

Finding the Fourth Proportional to 98,930.20, 148,395.30 and 72,686.20

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Solution

The fourth proportional to 98,930.20, 148,395.30 and 72,686.20 is: 109,029.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,930.20 : 148,395.30 = 72,686.20 : x
  2. Step 2: Convert to fraction form
    98,930.20/148,395.30 = 72,686.20/x
  3. Step 3: Cross multiply
    98,930.20x = 148,395.30 × 72,686.20
  4. Step 4: Simplify right side
    98,930.20x = 10,786,290,454.86
  5. Step 5: Solve for x
    x = 10,786,290,454.86/98,930.20
  6. Step 6: Final answer
    x = 109,029.30

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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.