Home / 137,809.69-190,197.99-84,125.81

Finding the Fourth Proportional to 137,809.69, 190,197.99 and 84,125.81

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Solution

The fourth proportional to 137,809.69, 190,197.99 and 84,125.81 is: 116,106.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,809.69 : 190,197.99 = 84,125.81 : x
  2. Step 2: Convert to fraction form
    137,809.69/190,197.99 = 84,125.81/x
  3. Step 3: Cross multiply
    137,809.69x = 190,197.99 × 84,125.81
  4. Step 4: Simplify right side
    137,809.69x = 16,000,560,444.62
  5. Step 5: Solve for x
    x = 16,000,560,444.62/137,809.69
  6. Step 6: Final answer
    x = 116,106.21

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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.