Home / 129,242.84-178,371.06-72,653

Finding the Fourth Proportional to 129,242.84, 178,371.06 and 72,653

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Solution

The fourth proportional to 129,242.84, 178,371.06 and 72,653 is: 100,270.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,242.84 : 178,371.06 = 72,653 : x
  2. Step 2: Convert to fraction form
    129,242.84/178,371.06 = 72,653/x
  3. Step 3: Cross multiply
    129,242.84x = 178,371.06 × 72,653
  4. Step 4: Simplify right side
    129,242.84x = 12,959,192,622.18
  5. Step 5: Solve for x
    x = 12,959,192,622.18/129,242.84
  6. Step 6: Final answer
    x = 100,270.10

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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.