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Finding the Fourth Proportional to 157,689.89, 217,660.32 and 97,279.37

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Solution

The fourth proportional to 157,689.89, 217,660.32 and 97,279.37 is: 134,275.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,689.89 : 217,660.32 = 97,279.37 : x
  2. Step 2: Convert to fraction form
    157,689.89/217,660.32 = 97,279.37/x
  3. Step 3: Cross multiply
    157,689.89x = 217,660.32 × 97,279.37
  4. Step 4: Simplify right side
    157,689.89x = 21,173,858,803.60
  5. Step 5: Solve for x
    x = 21,173,858,803.60/157,689.89
  6. Step 6: Final answer
    x = 134,275.31

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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.