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Finding the Fourth Proportional to 99,817.80, 149,726.70 and 95,881.20

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Solution

The fourth proportional to 99,817.80, 149,726.70 and 95,881.20 is: 143,821.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,817.80 : 149,726.70 = 95,881.20 : x
  2. Step 2: Convert to fraction form
    99,817.80/149,726.70 = 95,881.20/x
  3. Step 3: Cross multiply
    99,817.80x = 149,726.70 × 95,881.20
  4. Step 4: Simplify right side
    99,817.80x = 14,355,975,668.04
  5. Step 5: Solve for x
    x = 14,355,975,668.04/99,817.80
  6. Step 6: Final answer
    x = 143,821.80

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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.