Home / 144,972.09-217,520.73-78,459.15

Finding the Fourth Proportional to 144,972.09, 217,520.73 and 78,459.15

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Solution

The fourth proportional to 144,972.09, 217,520.73 and 78,459.15 is: 117,722.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,972.09 : 217,520.73 = 78,459.15 : x
  2. Step 2: Convert to fraction form
    144,972.09/217,520.73 = 78,459.15/x
  3. Step 3: Cross multiply
    144,972.09x = 217,520.73 × 78,459.15
  4. Step 4: Simplify right side
    144,972.09x = 17,066,491,583.18
  5. Step 5: Solve for x
    x = 17,066,491,583.18/144,972.09
  6. Step 6: Final answer
    x = 117,722.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.