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Finding the Fourth Proportional to 129,479.70, 194,230.20 and 35,985.44

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Solution

The fourth proportional to 129,479.70, 194,230.20 and 35,985.44 is: 53,981.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,479.70 : 194,230.20 = 35,985.44 : x
  2. Step 2: Convert to fraction form
    129,479.70/194,230.20 = 35,985.44/x
  3. Step 3: Cross multiply
    129,479.70x = 194,230.20 × 35,985.44
  4. Step 4: Simplify right side
    129,479.70x = 6,989,459,208.29
  5. Step 5: Solve for x
    x = 6,989,459,208.29/129,479.70
  6. Step 6: Final answer
    x = 53,981.12

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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.