Home / 96,930.60-145,415.10-81,455.40

Finding the Fourth Proportional to 96,930.60, 145,415.10 and 81,455.40

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Solution

The fourth proportional to 96,930.60, 145,415.10 and 81,455.40 is: 122,199.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,930.60 : 145,415.10 = 81,455.40 : x
  2. Step 2: Convert to fraction form
    96,930.60/145,415.10 = 81,455.40/x
  3. Step 3: Cross multiply
    96,930.60x = 145,415.10 × 81,455.40
  4. Step 4: Simplify right side
    96,930.60x = 11,844,845,136.54
  5. Step 5: Solve for x
    x = 11,844,845,136.54/96,930.60
  6. Step 6: Final answer
    x = 122,199.23

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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.