Home / 157,431.21-217,319.75-106,513.01

Finding the Fourth Proportional to 157,431.21, 217,319.75 and 106,513.01

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Solution

The fourth proportional to 157,431.21, 217,319.75 and 106,513.01 is: 147,031.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,431.21 : 217,319.75 = 106,513.01 : x
  2. Step 2: Convert to fraction form
    157,431.21/217,319.75 = 106,513.01/x
  3. Step 3: Cross multiply
    157,431.21x = 217,319.75 × 106,513.01
  4. Step 4: Simplify right side
    157,431.21x = 23,147,379,900.73
  5. Step 5: Solve for x
    x = 23,147,379,900.73/157,431.21
  6. Step 6: Final answer
    x = 147,031.71

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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.