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Finding the Fourth Proportional to 123,762.93, 170,778.65 and 69,307.52

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Solution

The fourth proportional to 123,762.93, 170,778.65 and 69,307.52 is: 95,636.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,762.93 : 170,778.65 = 69,307.52 : x
  2. Step 2: Convert to fraction form
    123,762.93/170,778.65 = 69,307.52/x
  3. Step 3: Cross multiply
    123,762.93x = 170,778.65 × 69,307.52
  4. Step 4: Simplify right side
    123,762.93x = 11,836,243,500.02
  5. Step 5: Solve for x
    x = 11,836,243,500.02/123,762.93
  6. Step 6: Final answer
    x = 95,636.42

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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.