Home / 131,475.66-197,012.80-78,062.45

Finding the Fourth Proportional to 131,475.66, 197,012.80 and 78,062.45

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Solution

The fourth proportional to 131,475.66, 197,012.80 and 78,062.45 is: 116,974.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,475.66 : 197,012.80 = 78,062.45 : x
  2. Step 2: Convert to fraction form
    131,475.66/197,012.80 = 78,062.45/x
  3. Step 3: Cross multiply
    131,475.66x = 197,012.80 × 78,062.45
  4. Step 4: Simplify right side
    131,475.66x = 15,379,300,961.87
  5. Step 5: Solve for x
    x = 15,379,300,961.87/131,475.66
  6. Step 6: Final answer
    x = 116,974.51

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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.