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Finding the Fourth Proportional to 96,369.80, 144,900.30 and 81,163.40

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Solution

The fourth proportional to 96,369.80, 144,900.30 and 81,163.40 is: 122,036.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,369.80 : 144,900.30 = 81,163.40 : x
  2. Step 2: Convert to fraction form
    96,369.80/144,900.30 = 81,163.40/x
  3. Step 3: Cross multiply
    96,369.80x = 144,900.30 × 81,163.40
  4. Step 4: Simplify right side
    96,369.80x = 11,760,601,009.02
  5. Step 5: Solve for x
    x = 11,760,601,009.02/96,369.80
  6. Step 6: Final answer
    x = 122,036.17

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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.