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Finding the Fourth Proportional to 96,636.80, 145,246.80 and 83,806.40

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Solution

The fourth proportional to 96,636.80, 145,246.80 and 83,806.40 is: 125,962.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,636.80 : 145,246.80 = 83,806.40 : x
  2. Step 2: Convert to fraction form
    96,636.80/145,246.80 = 83,806.40/x
  3. Step 3: Cross multiply
    96,636.80x = 145,246.80 × 83,806.40
  4. Step 4: Simplify right side
    96,636.80x = 12,172,611,419.52
  5. Step 5: Solve for x
    x = 12,172,611,419.52/96,636.80
  6. Step 6: Final answer
    x = 125,962.48

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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.