Home / 131,491.60-197,456.10-72,369.70

Finding the Fourth Proportional to 131,491.60, 197,456.10 and 72,369.70

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Solution

The fourth proportional to 131,491.60, 197,456.10 and 72,369.70 is: 108,674.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,491.60 : 197,456.10 = 72,369.70 : x
  2. Step 2: Convert to fraction form
    131,491.60/197,456.10 = 72,369.70/x
  3. Step 3: Cross multiply
    131,491.60x = 197,456.10 × 72,369.70
  4. Step 4: Simplify right side
    131,491.60x = 14,289,838,720.17
  5. Step 5: Solve for x
    x = 14,289,838,720.17/131,491.60
  6. Step 6: Final answer
    x = 108,674.92

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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.