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Finding the Fourth Proportional to 159,785.60, 239,851.20 and 89,801.60

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Solution

The fourth proportional to 159,785.60, 239,851.20 and 89,801.60 is: 134,799.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,785.60 : 239,851.20 = 89,801.60 : x
  2. Step 2: Convert to fraction form
    159,785.60/239,851.20 = 89,801.60/x
  3. Step 3: Cross multiply
    159,785.60x = 239,851.20 × 89,801.60
  4. Step 4: Simplify right side
    159,785.60x = 21,539,021,521.92
  5. Step 5: Solve for x
    x = 21,539,021,521.92/159,785.60
  6. Step 6: Final answer
    x = 134,799.52

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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.