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Finding the Fourth Proportional to 99,000, 136,564.11 and 58,674.15

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Solution

The fourth proportional to 99,000, 136,564.11 and 58,674.15 is: 80,937.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,000 : 136,564.11 = 58,674.15 : x
  2. Step 2: Convert to fraction form
    99,000/136,564.11 = 58,674.15/x
  3. Step 3: Cross multiply
    99,000x = 136,564.11 × 58,674.15
  4. Step 4: Simplify right side
    99,000x = 8,012,783,074.76
  5. Step 5: Solve for x
    x = 8,012,783,074.76/99,000
  6. Step 6: Final answer
    x = 80,937.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.