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Finding the Fourth Proportional to 144,171.81, 216,288.09 and 54,215.10

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Solution

The fourth proportional to 144,171.81, 216,288.09 and 54,215.10 is: 81,334.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,171.81 : 216,288.09 = 54,215.10 : x
  2. Step 2: Convert to fraction form
    144,171.81/216,288.09 = 54,215.10/x
  3. Step 3: Cross multiply
    144,171.81x = 216,288.09 × 54,215.10
  4. Step 4: Simplify right side
    144,171.81x = 11,726,080,428.16
  5. Step 5: Solve for x
    x = 11,726,080,428.16/144,171.81
  6. Step 6: Final answer
    x = 81,334.07

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1.5x scale

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.