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Finding the Fourth Proportional to 124,191.96, 171,292.48 and 78,830.54

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Solution

The fourth proportional to 124,191.96, 171,292.48 and 78,830.54 is: 108,727.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,191.96 : 171,292.48 = 78,830.54 : x
  2. Step 2: Convert to fraction form
    124,191.96/171,292.48 = 78,830.54/x
  3. Step 3: Cross multiply
    124,191.96x = 171,292.48 × 78,830.54
  4. Step 4: Simplify right side
    124,191.96x = 13,503,078,696.34
  5. Step 5: Solve for x
    x = 13,503,078,696.34/124,191.96
  6. Step 6: Final answer
    x = 108,727.48

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1.5x scale

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.