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Finding the Fourth Proportional to 99,622.80, 149,515.80 and 98,845.20

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Solution

The fourth proportional to 99,622.80, 149,515.80 and 98,845.20 is: 148,348.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,622.80 : 149,515.80 = 98,845.20 : x
  2. Step 2: Convert to fraction form
    99,622.80/149,515.80 = 98,845.20/x
  3. Step 3: Cross multiply
    99,622.80x = 149,515.80 × 98,845.20
  4. Step 4: Simplify right side
    99,622.80x = 14,778,919,154.16
  5. Step 5: Solve for x
    x = 14,778,919,154.16/99,622.80
  6. Step 6: Final answer
    x = 148,348.76

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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.