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Finding the Fourth Proportional to 157,290.86, 217,071.60 and 93,620.00

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Solution

The fourth proportional to 157,290.86, 217,071.60 and 93,620.00 is: 129,201.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,290.86 : 217,071.60 = 93,620.00 : x
  2. Step 2: Convert to fraction form
    157,290.86/217,071.60 = 93,620.00/x
  3. Step 3: Cross multiply
    157,290.86x = 217,071.60 × 93,620.00
  4. Step 4: Simplify right side
    157,290.86x = 20,322,243,383.60
  5. Step 5: Solve for x
    x = 20,322,243,383.60/157,290.86
  6. Step 6: Final answer
    x = 129,201.68

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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.