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Finding the Fourth Proportional to 99,712.60, 149,568.90 and 99,712.60

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Solution

The fourth proportional to 99,712.60, 149,568.90 and 99,712.60 is: 149,568.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,712.60 : 149,568.90 = 99,712.60 : x
  2. Step 2: Convert to fraction form
    99,712.60/149,568.90 = 99,712.60/x
  3. Step 3: Cross multiply
    99,712.60x = 149,568.90 × 99,712.60
  4. Step 4: Simplify right side
    99,712.60x = 14,913,903,898.14
  5. Step 5: Solve for x
    x = 14,913,903,898.14/99,712.60
  6. Step 6: Final answer
    x = 149,568.90

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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.