Home / 99,431.12-149,172.28-37,102.16

Finding the Fourth Proportional to 99,431.12, 149,172.28 and 37,102.16

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Solution

The fourth proportional to 99,431.12, 149,172.28 and 37,102.16 is: 55,662.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,431.12 : 149,172.28 = 37,102.16 : x
  2. Step 2: Convert to fraction form
    99,431.12/149,172.28 = 37,102.16/x
  3. Step 3: Cross multiply
    99,431.12x = 149,172.28 × 37,102.16
  4. Step 4: Simplify right side
    99,431.12x = 5,534,613,800.12
  5. Step 5: Solve for x
    x = 5,534,613,800.12/99,431.12
  6. Step 6: Final answer
    x = 55,662.79

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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.