Home / 98,765.12-148,154.88-28,644.80

Finding the Fourth Proportional to 98,765.12, 148,154.88 and 28,644.80

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Solution

The fourth proportional to 98,765.12, 148,154.88 and 28,644.80 is: 42,969.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,765.12 : 148,154.88 = 28,644.80 : x
  2. Step 2: Convert to fraction form
    98,765.12/148,154.88 = 28,644.80/x
  3. Step 3: Cross multiply
    98,765.12x = 148,154.88 × 28,644.80
  4. Step 4: Simplify right side
    98,765.12x = 4,243,866,906.62
  5. Step 5: Solve for x
    x = 4,243,866,906.62/98,765.12
  6. Step 6: Final answer
    x = 42,969.29

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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.