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Finding the Fourth Proportional to 129,929.55, 194,894.31 and 48,891.81

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Solution

The fourth proportional to 129,929.55, 194,894.31 and 48,891.81 is: 73,337.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,929.55 : 194,894.31 = 48,891.81 : x
  2. Step 2: Convert to fraction form
    129,929.55/194,894.31 = 48,891.81/x
  3. Step 3: Cross multiply
    129,929.55x = 194,894.31 × 48,891.81
  4. Step 4: Simplify right side
    129,929.55x = 9,528,735,574.60
  5. Step 5: Solve for x
    x = 9,528,735,574.60/129,929.55
  6. Step 6: Final answer
    x = 73,337.71

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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.