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Finding the Fourth Proportional to 136,889.84, 204,904.58 and 87,026.24

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Solution

The fourth proportional to 136,889.84, 204,904.58 and 87,026.24 is: 130,265.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,889.84 : 204,904.58 = 87,026.24 : x
  2. Step 2: Convert to fraction form
    136,889.84/204,904.58 = 87,026.24/x
  3. Step 3: Cross multiply
    136,889.84x = 204,904.58 × 87,026.24
  4. Step 4: Simplify right side
    136,889.84x = 17,832,073,696.53
  5. Step 5: Solve for x
    x = 17,832,073,696.53/136,889.84
  6. Step 6: Final answer
    x = 130,265.87

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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.