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Finding the Fourth Proportional to 129,848.88, 194,835.01 and 89,929.30

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Solution

The fourth proportional to 129,848.88, 194,835.01 and 89,929.30 is: 134,936.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,848.88 : 194,835.01 = 89,929.30 : x
  2. Step 2: Convert to fraction form
    129,848.88/194,835.01 = 89,929.30/x
  3. Step 3: Cross multiply
    129,848.88x = 194,835.01 × 89,929.30
  4. Step 4: Simplify right side
    129,848.88x = 17,521,375,128.06
  5. Step 5: Solve for x
    x = 17,521,375,128.06/129,848.88
  6. Step 6: Final answer
    x = 134,936.66

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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.