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Finding the Fourth Proportional to 134,873.60, 202,540.80 and 72,665.60

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Solution

The fourth proportional to 134,873.60, 202,540.80 and 72,665.60 is: 109,122.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,873.60 : 202,540.80 = 72,665.60 : x
  2. Step 2: Convert to fraction form
    134,873.60/202,540.80 = 72,665.60/x
  3. Step 3: Cross multiply
    134,873.60x = 202,540.80 × 72,665.60
  4. Step 4: Simplify right side
    134,873.60x = 14,717,748,756.48
  5. Step 5: Solve for x
    x = 14,717,748,756.48/134,873.60
  6. Step 6: Final answer
    x = 109,122.53

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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.