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Finding the Fourth Proportional to 99,432.82, 149,129.79 and 37,090.90

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Solution

The fourth proportional to 99,432.82, 149,129.79 and 37,090.90 is: 55,629.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,432.82 : 149,129.79 = 37,090.90 : x
  2. Step 2: Convert to fraction form
    99,432.82/149,129.79 = 37,090.90/x
  3. Step 3: Cross multiply
    99,432.82x = 149,129.79 × 37,090.90
  4. Step 4: Simplify right side
    99,432.82x = 5,531,358,127.91
  5. Step 5: Solve for x
    x = 5,531,358,127.91/99,432.82
  6. Step 6: Final answer
    x = 55,629.10

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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.