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Finding the Fourth Proportional to 144,517.51, 216,809.21 and 77,956.17

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Solution

The fourth proportional to 144,517.51, 216,809.21 and 77,956.17 is: 116,952.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,517.51 : 216,809.21 = 77,956.17 : x
  2. Step 2: Convert to fraction form
    144,517.51/216,809.21 = 77,956.17/x
  3. Step 3: Cross multiply
    144,517.51x = 216,809.21 × 77,956.17
  4. Step 4: Simplify right side
    144,517.51x = 16,901,615,632.33
  5. Step 5: Solve for x
    x = 16,901,615,632.33/144,517.51
  6. Step 6: Final answer
    x = 116,952.03

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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.