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Finding the Fourth Proportional to 129,991.92, 194,986.98 and 36,497.76

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Solution

The fourth proportional to 129,991.92, 194,986.98 and 36,497.76 is: 54,746.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,991.92 : 194,986.98 = 36,497.76 : x
  2. Step 2: Convert to fraction form
    129,991.92/194,986.98 = 36,497.76/x
  3. Step 3: Cross multiply
    129,991.92x = 194,986.98 × 36,497.76
  4. Step 4: Simplify right side
    129,991.92x = 7,116,587,999.16
  5. Step 5: Solve for x
    x = 7,116,587,999.16/129,991.92
  6. Step 6: Final answer
    x = 54,746.39

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1.5x scale

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.