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Finding the Fourth Proportional to 169,639.60, 254,410.80 and 51,282.40

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Solution

The fourth proportional to 169,639.60, 254,410.80 and 51,282.40 is: 76,908.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,639.60 : 254,410.80 = 51,282.40 : x
  2. Step 2: Convert to fraction form
    169,639.60/254,410.80 = 51,282.40/x
  3. Step 3: Cross multiply
    169,639.60x = 254,410.80 × 51,282.40
  4. Step 4: Simplify right side
    169,639.60x = 13,046,796,409.92
  5. Step 5: Solve for x
    x = 13,046,796,409.92/169,639.60
  6. Step 6: Final answer
    x = 76,908.91

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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.