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Finding the Fourth Proportional to 157,104.64, 235,436.80 and 121,881.60

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Solution

The fourth proportional to 157,104.64, 235,436.80 and 121,881.60 is: 182,651.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,104.64 : 235,436.80 = 121,881.60 : x
  2. Step 2: Convert to fraction form
    157,104.64/235,436.80 = 121,881.60/x
  3. Step 3: Cross multiply
    157,104.64x = 235,436.80 × 121,881.60
  4. Step 4: Simplify right side
    157,104.64x = 28,695,413,882.88
  5. Step 5: Solve for x
    x = 28,695,413,882.88/157,104.64
  6. Step 6: Final answer
    x = 182,651.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.