Home / 137,815.80-190,174.14-77,381.70

Finding the Fourth Proportional to 137,815.80, 190,174.14 and 77,381.70

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Solution

The fourth proportional to 137,815.80, 190,174.14 and 77,381.70 is: 106,780.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,815.80 : 190,174.14 = 77,381.70 : x
  2. Step 2: Convert to fraction form
    137,815.80/190,174.14 = 77,381.70/x
  3. Step 3: Cross multiply
    137,815.80x = 190,174.14 × 77,381.70
  4. Step 4: Simplify right side
    137,815.80x = 14,715,998,249.24
  5. Step 5: Solve for x
    x = 14,715,998,249.24/137,815.80
  6. Step 6: Final answer
    x = 106,780.20

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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.