Home / 98,999.40-148,487.02-28,878.78

Finding the Fourth Proportional to 98,999.40, 148,487.02 and 28,878.78

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Solution

The fourth proportional to 98,999.40, 148,487.02 and 28,878.78 is: 43,314.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,999.40 : 148,487.02 = 28,878.78 : x
  2. Step 2: Convert to fraction form
    98,999.40/148,487.02 = 28,878.78/x
  3. Step 3: Cross multiply
    98,999.40x = 148,487.02 × 28,878.78
  4. Step 4: Simplify right side
    98,999.40x = 4,288,123,983.44
  5. Step 5: Solve for x
    x = 4,288,123,983.44/98,999.40
  6. Step 6: Final answer
    x = 43,314.65

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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.