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Finding the Fourth Proportional to 157,604.51, 217,485.36 and 89,638.02

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Solution

The fourth proportional to 157,604.51, 217,485.36 and 89,638.02 is: 123,695.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,604.51 : 217,485.36 = 89,638.02 : x
  2. Step 2: Convert to fraction form
    157,604.51/217,485.36 = 89,638.02/x
  3. Step 3: Cross multiply
    157,604.51x = 217,485.36 × 89,638.02
  4. Step 4: Simplify right side
    157,604.51x = 19,494,957,273.48
  5. Step 5: Solve for x
    x = 19,494,957,273.48/157,604.51
  6. Step 6: Final answer
    x = 123,695.43

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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.