Home / 131,545.38-196,824.40-78,041.46

Finding the Fourth Proportional to 131,545.38, 196,824.40 and 78,041.46

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Solution

The fourth proportional to 131,545.38, 196,824.40 and 78,041.46 is: 116,769.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,545.38 : 196,824.40 = 78,041.46 : x
  2. Step 2: Convert to fraction form
    131,545.38/196,824.40 = 78,041.46/x
  3. Step 3: Cross multiply
    131,545.38x = 196,824.40 × 78,041.46
  4. Step 4: Simplify right side
    131,545.38x = 15,360,463,539.62
  5. Step 5: Solve for x
    x = 15,360,463,539.62/131,545.38
  6. Step 6: Final answer
    x = 116,769.31

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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.