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Finding the Fourth Proportional to 96,150.64, 144,070.44 and 78,628.72

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Solution

The fourth proportional to 96,150.64, 144,070.44 and 78,628.72 is: 117,815.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,150.64 : 144,070.44 = 78,628.72 : x
  2. Step 2: Convert to fraction form
    96,150.64/144,070.44 = 78,628.72/x
  3. Step 3: Cross multiply
    96,150.64x = 144,070.44 × 78,628.72
  4. Step 4: Simplify right side
    96,150.64x = 11,328,074,287.04
  5. Step 5: Solve for x
    x = 11,328,074,287.04/96,150.64
  6. Step 6: Final answer
    x = 117,815.90

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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.