Home / 157,418.28-217,237.31-89,435.37

Finding the Fourth Proportional to 157,418.28, 217,237.31 and 89,435.37

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Solution

The fourth proportional to 157,418.28, 217,237.31 and 89,435.37 is: 123,420.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,418.28 : 217,237.31 = 89,435.37 : x
  2. Step 2: Convert to fraction form
    157,418.28/217,237.31 = 89,435.37/x
  3. Step 3: Cross multiply
    157,418.28x = 217,237.31 × 89,435.37
  4. Step 4: Simplify right side
    157,418.28x = 19,428,698,750.48
  5. Step 5: Solve for x
    x = 19,428,698,750.48/157,418.28
  6. Step 6: Final answer
    x = 123,420.86

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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.