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Finding the Fourth Proportional to 129,874.85, 194,484.22 and 103,630.85

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Solution

The fourth proportional to 129,874.85, 194,484.22 and 103,630.85 is: 155,184.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,874.85 : 194,484.22 = 103,630.85 : x
  2. Step 2: Convert to fraction form
    129,874.85/194,484.22 = 103,630.85/x
  3. Step 3: Cross multiply
    129,874.85x = 194,484.22 × 103,630.85
  4. Step 4: Simplify right side
    129,874.85x = 20,154,565,030.19
  5. Step 5: Solve for x
    x = 20,154,565,030.19/129,874.85
  6. Step 6: Final answer
    x = 155,184.51

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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.