Home / 131,513.40-197,270.10-42,769.80

Finding the Fourth Proportional to 131,513.40, 197,270.10 and 42,769.80

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Solution

The fourth proportional to 131,513.40, 197,270.10 and 42,769.80 is: 64,154.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,513.40 : 197,270.10 = 42,769.80 : x
  2. Step 2: Convert to fraction form
    131,513.40/197,270.10 = 42,769.80/x
  3. Step 3: Cross multiply
    131,513.40x = 197,270.10 × 42,769.80
  4. Step 4: Simplify right side
    131,513.40x = 8,437,202,722.98
  5. Step 5: Solve for x
    x = 8,437,202,722.98/131,513.40
  6. Step 6: Final answer
    x = 64,154.70

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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.