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Finding the Fourth Proportional to 157,955.76, 217,837.80 and 131,055.66

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Solution

The fourth proportional to 157,955.76, 217,837.80 and 131,055.66 is: 180,739.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,955.76 : 217,837.80 = 131,055.66 : x
  2. Step 2: Convert to fraction form
    157,955.76/217,837.80 = 131,055.66/x
  3. Step 3: Cross multiply
    157,955.76x = 217,837.80 × 131,055.66
  4. Step 4: Simplify right side
    157,955.76x = 28,548,876,651.95
  5. Step 5: Solve for x
    x = 28,548,876,651.95/157,955.76
  6. Step 6: Final answer
    x = 180,739.70

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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.