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Finding the Fourth Proportional to 96,597.28, 144,919.56 and 78,045.40

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Solution

The fourth proportional to 96,597.28, 144,919.56 and 78,045.40 is: 117,087.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,597.28 : 144,919.56 = 78,045.40 : x
  2. Step 2: Convert to fraction form
    96,597.28/144,919.56 = 78,045.40/x
  3. Step 3: Cross multiply
    96,597.28x = 144,919.56 × 78,045.40
  4. Step 4: Simplify right side
    96,597.28x = 11,310,305,028.02
  5. Step 5: Solve for x
    x = 11,310,305,028.02/96,597.28
  6. Step 6: Final answer
    x = 117,087.20

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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.