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Finding the Fourth Proportional to 164,565.20, 246,750.60 and 85,833.20

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Solution

The fourth proportional to 164,565.20, 246,750.60 and 85,833.20 is: 128,699.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,565.20 : 246,750.60 = 85,833.20 : x
  2. Step 2: Convert to fraction form
    164,565.20/246,750.60 = 85,833.20/x
  3. Step 3: Cross multiply
    164,565.20x = 246,750.60 × 85,833.20
  4. Step 4: Simplify right side
    164,565.20x = 21,179,393,599.92
  5. Step 5: Solve for x
    x = 21,179,393,599.92/164,565.20
  6. Step 6: Final answer
    x = 128,699.10

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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.