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Finding the Fourth Proportional to 157,666.64, 217,584.72 and 89,693.36

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Solution

The fourth proportional to 157,666.64, 217,584.72 and 89,693.36 is: 123,779.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,666.64 : 217,584.72 = 89,693.36 : x
  2. Step 2: Convert to fraction form
    157,666.64/217,584.72 = 89,693.36/x
  3. Step 3: Cross multiply
    157,666.64x = 217,584.72 × 89,693.36
  4. Step 4: Simplify right side
    157,666.64x = 19,515,903,533.54
  5. Step 5: Solve for x
    x = 19,515,903,533.54/157,666.64
  6. Step 6: Final answer
    x = 123,779.54

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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.