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Finding the Fourth Proportional to 157,954.81, 217,977.58 and 89,978.08

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Solution

The fourth proportional to 157,954.81, 217,977.58 and 89,978.08 is: 124,169.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,954.81 : 217,977.58 = 89,978.08 : x
  2. Step 2: Convert to fraction form
    157,954.81/217,977.58 = 89,978.08/x
  3. Step 3: Cross multiply
    157,954.81x = 217,977.58 × 89,978.08
  4. Step 4: Simplify right side
    157,954.81x = 19,613,204,131.45
  5. Step 5: Solve for x
    x = 19,613,204,131.45/157,954.81
  6. Step 6: Final answer
    x = 124,169.72

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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.