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Finding the Fourth Proportional to 99,536.10, 149,102.55 and 61,980.90

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Solution

The fourth proportional to 99,536.10, 149,102.55 and 61,980.90 is: 92,845.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,536.10 : 149,102.55 = 61,980.90 : x
  2. Step 2: Convert to fraction form
    99,536.10/149,102.55 = 61,980.90/x
  3. Step 3: Cross multiply
    99,536.10x = 149,102.55 × 61,980.90
  4. Step 4: Simplify right side
    99,536.10x = 9,241,510,241.30
  5. Step 5: Solve for x
    x = 9,241,510,241.30/99,536.10
  6. Step 6: Final answer
    x = 92,845.81

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1.5x scale

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.