Home / 129,701.84-178,991.24-73,113.21

Finding the Fourth Proportional to 129,701.84, 178,991.24 and 73,113.21

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Solution

The fourth proportional to 129,701.84, 178,991.24 and 73,113.21 is: 100,897.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,701.84 : 178,991.24 = 73,113.21 : x
  2. Step 2: Convert to fraction form
    129,701.84/178,991.24 = 73,113.21/x
  3. Step 3: Cross multiply
    129,701.84x = 178,991.24 × 73,113.21
  4. Step 4: Simplify right side
    129,701.84x = 13,086,623,752.71
  5. Step 5: Solve for x
    x = 13,086,623,752.71/129,701.84
  6. Step 6: Final answer
    x = 100,897.75

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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.