Home / 99,821.42-137,751.74-56,799.98

Finding the Fourth Proportional to 99,821.42, 137,751.74 and 56,799.98

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Solution

The fourth proportional to 99,821.42, 137,751.74 and 56,799.98 is: 78,382.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,821.42 : 137,751.74 = 56,799.98 : x
  2. Step 2: Convert to fraction form
    99,821.42/137,751.74 = 56,799.98/x
  3. Step 3: Cross multiply
    99,821.42x = 137,751.74 × 56,799.98
  4. Step 4: Simplify right side
    99,821.42x = 7,824,296,076.97
  5. Step 5: Solve for x
    x = 7,824,296,076.97/99,821.42
  6. Step 6: Final answer
    x = 78,382.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.