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Finding the Fourth Proportional to 123,404.11, 170,300.88 and 75,683.77

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Solution

The fourth proportional to 123,404.11, 170,300.88 and 75,683.77 is: 104,445.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,404.11 : 170,300.88 = 75,683.77 : x
  2. Step 2: Convert to fraction form
    123,404.11/170,300.88 = 75,683.77/x
  3. Step 3: Cross multiply
    123,404.11x = 170,300.88 × 75,683.77
  4. Step 4: Simplify right side
    123,404.11x = 12,889,012,206.97
  5. Step 5: Solve for x
    x = 12,889,012,206.97/123,404.11
  6. Step 6: Final answer
    x = 104,445.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.